Part 13
======+=====+=====+=====+=====+=====+=====+=====+=====+=====+=====+====== _t._
4.6
4.8
5.0
5.2
5.4
5.6
5.8
6.0
6.2
6.4
_t._ ------+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+------ 8
8 9
9
10
-57
10 11
-41
-60
11 12
-31
-41
-59
12 13
-25
-31
-40
-58
13 14
-20
-25
-30
-39
-56
14
15
-16
-20
-24
-30
-38
-53
15 16
-13
-16
-19
-23
-28
-36
-50
16 17
-10
-12
-15
-18
-22
-27
-34
-47
17 18
-7
-9
-12
-14
-17
-21
-26
-32
-44
18 19
-5
-7
-9
-11
-14
-17
-20
-25
-30
-40
19
20
-2
-4
-6
-8
-10
-13
-16
-19
-23
-29
20 ------+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+------ _t._
4.6
4.8
5.0
5.2
5.4
5.6
5.8
6.0
6.2
6.4
_t_.
TABLE I.--TEMPERATURE OF THE DEW-POINT, IN DEGREES FAHRENHEIT.
======+===========================================================+====== _t_
Difference between the dry and wet thermometers (_t-t'_).
_t_ (Dry +----+----+----+----+----+----+----+----+----+----+----+----+(Dry ther.)
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
6.0
ther.) ------+----+----+----+----+----+----+----+----+----+----+----+----+------ 20
18
17
15
13
10
8
5
2
-2
-6
-12
-19
20 21
19
18
16
14
12
9
7
4
0
-4
-8
-15
21 22
20
19
17
15
13
11
8
6
+2
-1
-6
-11
22 23
22
20
18
16
14
12
10
7
4
+1
-3
-8
23 24
23
21
19
18
16
14
11
9
6
3
-1
-5
24
25
24
22
21
19
17
15
13
11
8
5
+2
-2
25 26
25
23
22
20
18
16
14
12
10
7
4
0
26 27
26
24
23
21
20
18
16
14
11
9
6
+3
27 28
27
25
24
22
21
19
17
15
13
11
8
5
28 29
28
26
25
24
22
20
19
17
14
12
10
7
29
30
29
27
26
25
23
22
20
18
16
14
11
9
30 31
30
29
27
26
24
23
21
19
18
15
13
11
31 32
31
30
28
27
26
24
22
21
19
17
15
13
32 33
31
31
29
28
26
25
23
22
19
18
16
14
33 34
32
32
30
29
27
26
24
24
21
20
18
16
34
35
33
32
31
30
29
28
26
25
23
22
20
18
35 36
35
34
32
31
30
29
27
26
24
23
21
19
36 37
36
35
33
32
31
30
28
27
26
24
22
21
37 38
37
36
34
33
32
31
30
28
27
26
24
22
38 39
38
37
35
34
33
32
30
29
28
27
25
24
39
40
39
38
36
35
34
33
31
30
29
28
26
25
40 41
40
39
37
36
35
34
32
32
30
29
28
26
41 42
41
40
39
38
36
35
34
33
31
30
29
27
42 43
42
41
40
39
37
36
35
34
32
31
30
29
43 44
43
42
41
40
38
37
36
35
33
32
31
30
44
45
44
43
42
41
40
39
37
36
34
33
32
31
45 46
45
44
43
42
41
40
38
37
36
35
33
32
46 47
46
45
44
43
42
41
40
39
37
36
34
33
47 48
47
46
45
44
43
42
41
40
38
37
36
35
48 49
48
47
46
45
44
43
42
41
39
38
37
36
49
50
49
48
47
46
45
44
43
42
41
40
38
37
50 51
50
49
48
47
46
45
44
43
42
41
39
38
51 52
51
50
49
48
47
46
45
44
43
42
41
40
52 53
52
51
50
49
48
47
46
45
44
43
42
41
53 54
53
52
51
50
50
49
47
46
45
44
43
42
54
55
54
53
53
52
51
50
49
48
47
46
44
43
55 56
55
54
54
53
52
51
50
49
48
47
45
44
56 57
56
55
55
54
53
52
51
50
49
48
47
46
57 58
57
56
56
55
54
53
52
51
50
49
48
47
58 59
58
57
57
56
55
54
53
52
51
50
49
48
59
60
59
58
58
57
56
55
54
53
52
51
50
49
60 61
60
59
59
58
57
56
55
54
53
52
51
50
61 62
61
60
60
59
58
57
56
55
54
53
52
52
62 63
62
61
61
60
59
58
57
56
55
55
54
53
63 64
63
62
62
61
60
59
58
57
56
56
55
54
64
65
64
63
63
62
61
60
59
59
58
57
56
55
65 66
65
64
64
63
62
61
60
60
59
58
57
56
66 67
67
66
65
64
63
62
61
61
60
59
58
57
67 68
68
67
66
65
64
63
62
62
61
60
59
58
68 69
69
68
67
66
65
64
63
63
62
61
60
59
69
70
70
69
68
67
67
66
65
64
63
62
61
61
70 71
71
70
69
68
68
67
66
65
64
63
62
62
71 72
72
71
70
69
69
68
67
66
65
64
63
63
72 73
73
72
71
70
70
69
68
67
66
66
65
64
73 74
74
73
72
71
71
70
69
68
67
67
66
65
74
75
75
74
73
72
72
71
70
69
68
68
67
66
75 76
76
75
74
73
73
72
71
70
69
69
68
67
76 77
77
76
75
74
74
73
72
71
70
70
69
68
77 78
78
77
76
75
75
74
73
72
71
71
70
69
78 79
79
78
77
76
76
75
74
73
72
72
71
70
79
80
80
79
78
77
77
76
75
74
73
73
72
72
80 ------+----+----+----+----+----+----+----+----+----+----+----+----+------ _t._
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
6.0
_t._ ======+====+====+====+====+====+====+====+====+====+====+====+====+======
TABLE I.--TEMPERATURE OF THE DEW-POINT, IN DEGREES FAHRENHEIT.
======+=============================================================================+====== _t_
Difference between the dry and wet thermometers (_t-t'_).
_t_ (Dry +-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+ (Dry ther.)
6.0
6.5
7.0
7.5
8.0
8.5
9.0
9.5
10.0
10.5
11.0
11.5
12.0
ther.) ------+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+------ 19
-25
19
20
-19
-32
20 21
-15
-24
-47
21 22
-11
-19
-31
22 23
-8
-14
-24
-45
23 24
-5
-10
-18
-30
24
25
-2
-7
-13
-22
-42
25 26
0
-4
-9
-17
-28
26 27
+3
-1
-6
-12
-20
-37
27 28
5
+1
-3
-8
-15
-25
-54
28 29
7
4
0
-4
-10
-18
-32
29
30
9
6
+2
-2
-6
-13
-22
-43
30 31
11
8
5
+1
-3
-8
-15
-27
31 32
13
10
7
4
0
-4
-10
-18
-33
32 33
14
12
9
6
+3
-1
-6
-12
-22
-44
33 34
16
14
11
8
6
+2
-2
-8
-15
-27
34
35
18
15
13
10
8
5
+1
-4
-9
-18
-32
35 36
19
17
15
12
10
8
4
0
-5
-12
-20
-42
36 37
21
19
17
14
12
9
6
+3
-2
-6
-14
-25
-52
37 38
22
20
19
16
14
11
9
6
+2
-2
-8
-16
-29
38 39
24
22
20
18
16
14
11
8
5
+1
-4
-10
-18
39
40
25
23
22
20
18
16
13
11
8
4
0
-5
-12
40 41
26
25
23
21
20
17
15
13
10
7
+4
-1
-6
41 42
27
26
24
23
21
19
18
15
12
10
7
+3
-2
42 43
29
27
26
24
23
21
19
17
14
12
9
6
+2
43 44
30
28
27
26
24
22
20
18
16
14
12
9
6
44
45
31
30
28
27
25
24
22
20
18
16
13
11
8
45 46
32
31
30
28
27
25
24
22
20
18
16
13
11
46 47
33
32
31
29
28
26
25
23
22
20
18
15
13
47 48
35
33
32
30
29
28
26
25
23
21
20
17
15
48 49
36
34
33
32
31
29
28
26
25
23
21
19
17
49
50
37
35
34
33
32
31
29
28
26
24
23
21
19
50 51
38
37
36
34
33
32
31
29
28
26
24
22
21
51 52
40
38
37
36
34
33
32
30
29
28
26
24
23
52 53
41
39
38
37
36
34
33
32
30
29
28
26
24
53 54
42
41
40
39
37
36
34
33
32
30
29
27
26
54
55
43
42
41
40
39
37
36
34
33
32
30
29
28
55 56
44
43
42
41
40
39
37
36
34
33
32
30
29
56 57
46
45
44
42
41
40
39
37
36
35
33
32
30
57 58
47
46
45
44
42
41
40
39
37
36
35
33
32
58 59
48
47
46
45
44
43
41
40
39
38
36
35
33
59
60
49
48
47
46
45
44
43
41
40
39
38
36
35
60 61
50
49
48
47
46
45
44
43
42
41
39
38
36
61 62
52
51
50
49
48
47
45
44
43
42
41
39
38
62 63
53
52
51
50
49
48
47
45
44
43
42
41
39
63 64
54
53
52
51
50
49
48
47
46
45
43
42
41
64
65
55
54
53
52
51
50
49
48
47
46
45
43
42
65 66
56
55
54
53
52
51
50
49
48
47
46
45
44
66 67
57
56
55
55
54
53
52
51
50
48
47
46
45
67 68
58
57
57
56
55
54
53
52
51
50
49
47
46
68 69
59
58
58
57
56
55
54
53
52
51
50
49
48
69
70
61
60
59
58
57
56
55
54
53
52
51
50
49
70 71
62
61
60
59
58
57
56
55
55
54
53
52
51
71 72
63
62
61
60
59
59
58
57
56
55
54
53
52
72 73
64
63
62
62
61
60
59
58
57
56
55
54
53
73 74
65
64
63
63
62
61
60
59
58
57
56
55
54
74
75
66
65
64
64
63
62
61
60
59
58
57
56
56
75 76
67
66
65
65
64
63
62
61
61
60
59
58
57
76 77
68
67
67
66
65
64
63
62
62
61
60
59
58
77 78
69
68
68
67
66
66
65
64
63
62
61
60
59
78 79
70
69
69
68
67
67
66
65
64
63
62
61
61
79
80
72
71
70
69
68
68
67
66
65
64
63
62
62
80 ------+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+------ _t._
6.0
6.5
7.0
7.5
8.0
8.5
9.0
9.5
10.0
10.5
11.0
11.5
12.0
_t._ ======+=====+=====+=====+=====+=====+=====+=====+=====+=====+=====+=====+=====+=====+======
TABLE I.--TEMPERATURE OF THE DEW-POINT, IN DEGREES FAHRENHEIT.
======+=============================================================================+====== _t_
Difference between the dry and wet thermometers (_t-t'_).
_t_ (Dry +-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+(Dry ther.)
12.0
12.5
13.0
13.5
14.0
14.5
15.0
15.5
16.0
16.5
17.0
17.5
18.0
ther.) ------+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+------ 40
-12
-22
-44
40 41
-6
-13
-25
41 42
-2
-7
-15
-28
42 43
+2
-3
-8
-17
-33
43 44
6
+1
-4
-10
-19
-40
44
45
8
5
0
-4
-11
-22
-48
45 46
11
8
+4
0
-5
-13
-24
46 47
13
10
7
+3
-1
-6
-14
-27
47 48
15
12
10
6
+2
-2
-8
-16
-30
48 49
17
14
12
9
6
+2
-3
-9
-18
-35
49
50
19
16
14
12
9
5
+1
-4
-10
-20
-42
50 51
21
18
17
14
11
8
5
0
-5
-12
-22
-52
51 52
23
21
19
16
14
11
8
+4
0
-6
-13
-25
52 53
24
22
20
18
16
14
11
8
+4
-1
-6
-14
-28
53 54
26
24
22
20
18
16
13
10
7
+3
-2
-8
-16
54
55
28
26
24
22
20
18
16
13
10
7
+3
-2
-8
55 56
29
27
26
24
22
20
18
15
13
10
6
+2
-2
56 57
30
29
28
26
24
22
20
18
15
13
10
6
+2
57 58
32
30
29
27
26
24
22
20
18
15
12
9
6
58 59
33
32
31
29
27
26
24
22
20
18
15
12
9
59
60
35
33
32
30
29
27
26
24
22
20
18
15
12
60 61
36
35
33
32
31
29
28
26
24
22
20
18
15
61 62
38
37
35
34
32
31
29
28
26
24
22
20
18
62 63
39
38
37
35
34
32
31
29
28
26
24
22
20
63 64
41
39
38
37
35
34
32
31
29
28
26
24
22
64
65
42
41
40
38
37
35
34
32
31
29
28
26
24
65 66
44
43
41
40
38
37
35
34
32
31
30
28
26
66 67
45
44
43
41
40
39
37
36
34
32
31
30
28
67 68
46
45
44
43
42
40
39
38
36
34
33
31
30
68 69
48
47
46
45
43
42
40
39
38
36
34
33
32
69
70
49
48
47
46
45
43
42
41
39
38
36
35
33
70 71
51
49
48
47
46
45
43
42
41
39
38
36
35
71 72
52
51
50
49
47
46
45
44
43
41
40
38
37
72 73
53
52
51
50
49
48
46
45
44
43
41
40
38
73 74
54
53
52
51
50
49
48
47
45
44
43
41
40
74
75
56
55
54
53
52
50
49
48
47
45
44
43
42
75 76
57
56
55
54
53
52
50
49
48
47
46
45
43
76 77
58
57
56
55
54
53
52
51
50
49
48
46
45
77 78
59
58
57
56
55
54
53
52
51
50
49
48
47
78 79
61
60
59
58
57
56
55
54
53
52
51
49
48
79
80
62
61
60
59
58
57
56
55
54
53
52
51
50
80 ------+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+------ _t._
12.0
12.5
13.0
13.5
14.0
14.5
15.0
15.5
16.0
16.5
17.0
17.5
18.0
_t._ ------+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+------
TABLE I.--TEMPERATURE OF THE DEW-POINT, IN DEGREES FAHRENHEIT.
======+=============================================================================+====== _t_
Difference between the dry and wet thermometers (_t-t'_).
_t_ (Dry +-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+(Dry ther.)
18.0
19.0
20.0
21.0
22.0
23.0
24.0
25.0
26.0
27.0
28.0
29.0
30.0
ther.) ------+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+------ 55
-8
55 56
-2
-19
56 57
+2
-10
-48
57 58
6
-3
-22
58 59
9
+1
-12
59
60
12
5
-5
-25
60 61
15
9
0
-14
61 62
18
12
+5
-6
-28
62 63
20
15
9
0
-14
63 64
22
18
12
+4
-6
-32
64
65
24
20
15
9
0
-16
65 66
26
22
18
12
+4
-7
-34
66 67
28
24
20
15
9
-1
-16
67 68
30
26
23
18
12
+4
-7
-37
68 69
32
28
25
20
15
8
0
-17
69
70
33
30
27
23
19
12
+5
-7
-39
70 71
35
32
29
25
21
16
9
0
-17
71 72
37
33
31
27
23
18
13
+5
-6
-39
72 73
38
35
32
29
25
21
16
10
0
-16
73 74
40
37
34
31
28
24
19
13
+6
-6
-37
74
75
42
39
36
32
30
26
22
16
10
0
-16
75 76
43
41
38
34
32
28
24
20
14
+6
-6
-34
76 77
45
42
40
36
33
30
26
22
17
11
+1
-14
77 78
47
44
41
38
35
32
28
24
20
14
7
-4
-30
78 79
48
46
43
40
37
34
31
27
23
18
11
+2
-13
79
80
50
47
45
42
39
36
32
29
25
21
15
8
-3
80 ------+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+------ _t_
18.0
19.0
20.0
21.0
22.0
23.0
24.0
25.0
26.0
27.0
28.0
29.0
30.0
_t_ ======+=====+=====+=====+=====+=====+=====+=====+=====+=====+=====+=====+=====+=====+======
TABLE I.--TEMPERATURE OF THE DEW-POINT, IN DEGREES FAHRENHEIT.
======+==============================================================+====== _t_
Difference between the dry and wet thermometers (_t-t'_).
_t_ (Dry +----+----+----+----+----+----+----+----+----+-----+-----+-----+(Dry ther.)
1.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
9.0
10.0
11.0
12.0
ther.) ------+----+----+----+----+----+----+----+----+----+-----+-----+-----+------ 80
79
77
76
74
73
72
70
68
67
65
63
62
80 81
80
78
77
75
74
73
71
70
68
66
65
63
81 82
81
79
78
77
75
74
72
71
69
68
66
64
82 83
82
80
79
78
76
75
73
72
70
69
67
65
83 84
83
81
80
79
77
76
74
73
71
70
68
67
84
85
84
82
81
80
78
77
75
74
72
71
69
68
85 86
85
83
82
81
79
78
76
75
73
72
71
69
86 87
86
84
83
82
80
79
78
76
74
73
72
70
87 88
87
85
84
83
81
80
79
77
75
74
73
71
88 89
88
86
85
84
82
81
80
78
76
76
74
72
89
90
89
87
86
85
84
82
81
79
78
77
75
74
90 91
90
88
87
86
85
83
82
80
79
78
76
75
91 92
91
89
88
87
86
84
83
82
80
79
77
76
92 93
92
91
89
88
87
85
84
83
81
80
78
77
93 94
93
92
90
89
88
86
85
84
82
81
80
78
94
95
94
93
91
90
89
87
86
85
83
82
81
79
95 96
95
94
92
91
90
88
87
86
84
83
82
80
96 97
96
95
93
92
91
90
88
87
86
84
83
81
97 98
97
96
94
93
92
91
89
88
87
85
84
83
98 99
98
97
95
94
93
92
90
89
88
86
85
84
99
100
99
98
96
95
94
93
91
90
89
87
86
85
100 101
100
99
97
96
95
94
92
91
90
88
87
86
101 102
101
100
98
97
96
95
93
92
91
90
88
87
102 103
102
101
99
98
97
96
94
93
92
91
89
88
103 104
103
102
100
99
98
97
96
94
93
92
90
89
104
105
104
103
101
100
99
98
97
95
94
93
91
90
105 106
105
104
102
101
100
99
98
96
95
94
93
91
106 107
106
105
103
102
101
100
99
97
96
95
94
92
107 108
107
106
104
103
102
101
100
98
97
96
95
93
108 109
108
107
105
104
103
102
101
99
98
97
96
94
109
110
109
108
107
105
104
103
102
101
99
98
97
96
110 ------+----+----+----+----+----+----+----+----+----+-----+-----+-----+------ _t._
1.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
9.0
10.0
11.0
12.0
_t._ ======+====+====+====+====+====+====+====+====+====+=====+=====+=====+======
TABLE I.--TEMPERATURE OF THE DEW-POINT, IN DEGREES FAHRENHEIT.
======+=============================================================================+====== _t_
Difference between the dry and wet thermometers (_t-t'_).
_t_ (Dry +-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+(Dry ther.)
12.0
13.0
14.0
15.0
16.0
17.0
18.0
19.0
20.0
21.0
22.0
23.0
24.0
ther.) ------+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+------ 80
62
60
58
56
54
52
50
47
45
42
39
36
32
80 81
63
61
59
57
55
53
51
49
47
44
41
38
35
81 82
64
62
61
59
57
55
53
50
48
45
43
40
37
82 83
65
64
62
60
58
56
54
52
50
47
44
42
39
83 84
67
65
63
61
59
57
55
53
51
49
46
43
41
84
85
68
66
64
62
61
59
57
55
53
50
48
45
42
85 86
69
67
66
64
62
60
58
56
54
52
49
47
44
86 87
70
68
67
65
63
61
59
57
55
53
51
48
46
87 88
71
70
68
66
64
63
61
59
57
55
53
50
48
88 89
72
71
69
67
66
64
62
60
58
56
54
52
49
89
90
74
72
70
69
67
65
63
62
60
58
56
53
51
90 91
75
73
72
70
68
67
65
63
61
59
57
55
53
91 92
76
74
73
71
69
68
66
64
62
60
58
56
54
92 93
77
75
74
72
71
69
67
66
64
62
60
58
56
93 94
78
77
75
73
72
70
69
67
65
63
61
59
57
94
95
79
78
76
75
73
71
70
68
66
64
63
61
59
95 96
80
79
77
76
74
73
71
69
68
66
64
62
60
96 97
81
80
78
77
75
74
72
71
69
67
65
63
61
97 98
83
81
80
78
77
75
73
72
70
68
67
65
63
98 99
84
82
81
79
78
76
75
73
71
70
68
66
64
99
100
85
83
82
80
79
77
76
74
73
71
69
67
66
100 101
86
84
83
82
80
79
77
75
74
72
71
69
67
101 102
87
85
84
83
81
80
78
77
75
73
72
70
68
102 103
88
87
85
84
82
81
79
78
76
75
73
71
70
103 104
89
88
86
85
83
82
81
79
78
76
74
73
71
104
105
90
89
87
86
85
83
82
80
79
77
76
74
72
105 106
91
90
89
87
86
84
83
81
80
78
77
75
74
106 107
92
91
90
88
87
85
84
83
81
80
78
76
75
107 108
93
92
91
89
88
87
85
84
82
81
79
78
76
108 109
94
93
92
90
89
88
86
85
83
82
80
79
77
109
110
96
94
93
92
90
89
87
86
85
83
82
80
79
110 ------+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+------ _t._
12.0
13.0
14.0
15.0
16.0
17.0
18.0
19.0
20.0
21.0
22.0
23.0
24.0
_t._ ======+=====+=====+=====+=====+=====+=====+=====+=====+=====+=====+=====+=====+=====+======
TABLE I.--TEMPERATURE OF THE DEW-POINT, IN DEGREES FAHRENHEIT.
======+=============================================================================+====== _t_
Difference between the dry and wet thermometers (_t-t'_).
_t_ (Dry +-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+(Dry ther.)
24.0
25.0
26.0
27.0
28.0
29.0
30.0
31.0
32.0
33.0
34.0
35.0
36.0
ther.) ------+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+------ 80
32
29
25
21
15
8
-3
-27
80 81
35
31
28
24
18
12
+3
-11
81 82
37
33
30
26
22
16
9
-2
-24
82 83
39
35
32
28
24
19
13
+5
-9
83 84
41
37
34
30
27
22
17
10
0
-20
84
85
42
39
36
32
29
25
20
14
+6
-7
-54
85 86
44
41
38
35
31
28
23
18
11
+1
-17
86 87
46
43
40
37
33
30
26
21
15
7
-5
-38
87 88
48
45
42
39
35
32
28
24
19
12
+3
-13
88 89
49
47
44
41
38
34
31
27
22
16
9
-2
-28
89
90
51
48
46
43
40
36
32
29
25
20
13
+4
-10
90 91
53
50
47
45
42
38
35
32
28
23
18
10
0
91 92
54
52
49
46
44
41
37
34
30
26
21
15
+7
92 93
56
53
51
48
46
43
39
36
32
29
24
19
12
93 94
57
55
53
50
47
45
42
38
35
31
27
22
16
94
95
59
56
54
52
49
46
44
40
37
33
30
25
20
95 96
60
58
56
53
51
48
46
43
39
36
32
28
24
96 97
61
59
57
55
53
50
47
45
41
38
34
31
26
97 98
63
61
59
57
54
52
49
47
44
40
37
33
29
98 99
64
62
60
58
56
54
51
48
46
43
39
35
32
99
100
66
64
62
60
57
55
53
50
48
45
41
38
34
100 101
67
65
63
61
59
57
54
52
49
47
44
40
37
101 102
68
66
65
63
61
58
56
54
51
49
46
43
39
102 103
70
68
66
64
62
60
58
55
53
50
48
45
41
103 104
71
69
67
65
63
61
59
57
55
52
50
47
44
104
105
72
70
69
67
65
63
61
59
56
54
52
49
46
105 106
74
72
70
68
66
64
62
60
58
56
53
51
48
106 107
75
73
71
70
68
66
64
62
60
57
55
52
50
107 108
76
74
73
71
69
67
65
63
61
59
57
54
52
108 109
77
76
74
72
71
69
67
65
63
61
58
56
54
109
110
79
77
75
74
72
70
68
66
64
62
60
58
55
110 ------+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+------ _t._
24.0
25.0
26.0
27.0
28.0
29.0
30.0
31.0
32.0
33.0
34.0
35.0
36.0
_t._ ======+=====+=====+=====+=====+=====+=====+=====+=====+=====+=====+=====+=====+=====+======
TABLE I.--TEMPERATURE OF THE DEW-POINT, IN DEGREES FAHRENHEIT.
======+=============================================================================+====== _t_
Difference between the dry and wet thermometers (_t-t'_).
_t_ (Dry +-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+(Dry ther.)
36.0
37.0
38.0
39.0
40.0
41.0
42.0
43.0
44.0
45.0
46.0
47.0
48.0
ther.) ------+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+------ 89
-28
89
90
-10
90 91
0
-22
91 92
+7
-7
-16
92 93
12
+2
-4
93 94
16
8
+4
-37
94
95
20
13
10
-12
95 96
24
15
15
-1
-25
96 97
26
21
19
+7
-8
97 98
29
25
23
12
+2
-18
98 99
32
28
26
17
9
-4
-42
99
100
34
30
29
21
14
+5
-12
100 101
37
32
32
24
18
11
0
-25
101 102
39
35
34
27
22
16
+7
-7
102 103
41
38
34
30
26
20
13
+3
-16
103 104
44
40
37
32
29
24
18
10
-2
-38
104
105
46
43
39
35
31
27
22
15
+6
-10
105 106
48
45
42
38
34
30
25
20
12
+1
-22
106 107
50
47
44
40
37
32
28
24
17
9
-5
107 108
52
49
46
43
39
35
31
27
21
14
+5
-13
108 109
54
51
48
45
42
38
34
30
25
19
12
0
-28
109
110
55
53
50
47
44
41
37
33
28
23
17
+8
-7
110 ------+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+------ _t._
36.0
37.0
38.0
39.0
40.0
41.0
42.0
43.0
44.0
45.0
46.0
47.0
48.0
_t._ ======+=====+=====+=====+=====+=====+=====+=====+=====+=====+=====+=====+=====+=====+======
TABLE II.--RELATIVE HUMIDITY, PER CENT.
======+================================================================+======= _t_
Difference between the dry and wet thermometers (_t_--_t'_).
_t_ (Dry +----+----+----+----+----+----+----+----+----+----+----+----+----+ (Dry ther.)
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
2.2
2.4
2.6
ther.) ------+----+----+----+----+----+----+----+----+----+----+----+----+----+------- -40
46
-40 -39
49
-39 -38
51
-38 -37
54
-37 -36
56
-36
-35
59
-35 -34
61
22
-34 -33
63
25
-33 -32
65
30
-32 -31
67
34
-31
-30
69
38
-30 -29
71
42
-29 -28
72
45
17
-28 -27
74
48
22
-27 -26
76
51
26
-26
-25
77
53
31
-25 -24
78
56
34
12
-24 -23
79
58
37
16
-23 -22
80
60
40
20
-22 -21
81
62
44
25
-21
-20
82
64
47
29
11
-20 -19
83
66
49
33
16
-19 -18
84
68
52
36
20
-18 -17
85
70
54
39
24
9
-17 -16
86
71
57
43
28
14
-16
-15
86
73
59
46
32
19
-15 -14
87
74
61
48
36
23
10
-14 -13
88
76
63
51
39
27
15
-13 -12
88
77
65
53
42
30
19
7
-12 -11
89
78
67
56
45
34
23
12
-11
-10
90
79
68
58
48
37
26
16
5
-10 -9
90
80
70
60
50
40
30
20
10
-9 -8
90
81
71
62
52
43
33
24
14
5
-8 -7
91
82
73
63
54
45
36
27
18
9
-7 -6
91
83
74
65
56
48
39
31
22
13
5
-6
-5
92
83
75
67
58
50
42
34
25
17
9
-5 -4
92
84
76
68
60
52
45
37
29
21
13
5
-4 -3
92
85
77
70
62
55
47
40
32
25
17
10
-3 -2
93
86
78
71
64
57
50
42
35
28
21
14
7
-2 -1
93
86
79
72
66
59
52
45
38
31
25
18
11
-1
0
93
87
80
74
67
61
54
48
41
35
28
22
15
0 +1
94
87
81
75
69
63
56
50
44
38
32
25
19
+1 2
94
88
82
76
70
64
58
52
46
40
35
29
23
2 3
94
88
83
77
71
66
60
54
49
43
37
32
26
3 4
94
89
83
78
73
67
62
56
51
45
40
34
29
4
5
95
89
84
79
74
68
63
58
53
48
42
37
32
5 6
95
90
85
80
75
70
65
60
54
50
44
39
34
6 7
95
90
85
80
76
71
66
61
56
51
47
42
37
7 8
95
91
86
81
76
72
67
62
58
53
49
44
39
8 9
96
91
86
82
77
73
68
64
59
55
51
46
42
9
10
96
91
87
83
78
74
69
65
61
57
52
48
44
10 11
96
92
87
83
79
75
71
66
62
58
54
50
46
11 12
96
92
88
84
80
76
72
68
64
60
56
52
48
12 13
96
92
88
84
81
77
73
69
65
61
58
54
50
13 14
96
93
89
85
81
78
74
70
67
63
59
56
52
14
15
96
93
89
86
82
79
75
71
68
64
61
57
54
15 16
97
93
90
86
83
79
76
73
69
66
62
59
56
16 17
97
93
90
87
83
80
77
74
70
67
64
60
57
17 18
97
94
90
87
84
81
78
74
71
68
65
62
59
18 19
97
94
91
88
84
81
78
75
72
69
66
63
60
19
20
97
94
91
88
85
82
79
76
73
70
67
64
61
20 ------+----+----+----+----+----+----+----+----+----+----+----+----+----+------- _t._
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
2.2
2.4
2.6
_t._ ======+====+====+====+====+====+====+====+====+====+====+====+====+====+=======
TABLE II.--RELATIVE HUMIDITY, PER CENT.
======+===========================================================+====== _t_
Difference between the dry and wet thermometers (_t-t'_).
_t_ (Dry +-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+(Dry ther.)
2.6
2.8
3.0
3.2
3.4
3.6
3.8
4.0
4.2
4.4
ther.) ------+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+------ -2
7
-2 -1
11
4
-1
0
15
9
0 +1
19
13
7
+1 2
23
17
11
5
2 3
26
20
15
9
4
3 4
29
24
18
13
8
2
4
5
32
27
22
16
11
6
5 6
34
29
25
20
15
10
5
6 7
37
32
28
23
18
13
9
4
7 8
39
35
30
26
21
17
12
8
3
8 9
42
37
33
28
24
20
15
11
7
2
9
10
44
40
35
31
27
23
19
14
10
6
10 11
46
42
38
34
30
26
22
18
14
10
11 12
48
44
40
36
32
28
25
21
17
13
12 13
50
46
42
39
35
31
27
24
20
16
13 14
52
48
45
41
37
34
30
27
23
19
14
15
54
50
47
43
40
36
33
29
26
23
15 16
56
52
49
46
42
39
36
32
29
25
16 17
57
54
51
48
44
41
38
35
31
28
17 18
59
56
53
49
46
43
40
37
34
31
18 19
60
57
54
51
48
45
42
39
36
33
19
20
61
58
56
53
50
47
44
41
38
35
20 ------+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+------ _t._
2.6
2.8
3.0
3.2
3.4
3.6
3.8
4.0
4.2
4.4
_t._ ======+=====+=====+=====+=====+=====+=====+=====+=====+=====+=====+======
======+=====+=====+=====+=====+=====+=====+=====+=====+=====+=====+====== _t._
4.6
4.8
5.0
5.2
5.4
5.6
5.8
6.0
6.2
6.4
_t._ ------+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+------ 8
8 9
9
10
2
10 11
6
2
11 12
9
5
2
12 13
13
9
5
2
13 14
16
12
9
5
2
14
15
19
16
12
9
5
2
15 16
22
19
16
12
9
6
2
16 17
25
22
19
16
12
9
6
3
17 18
28
25
22
19
16
13
9
6
3
18 19
30
27
24
21
19
16
13
10
7
4
19
20
33
30
27
24
21
19
16
13
10
7
20 ------+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+------ _t._
4.6
4.8
5.0
5.2
5.4
5.6
5.8
6.0
6.2
6.4
_t._ ======+=====+=====+=====+=====+=====+=====+=====+=====+=====+=====+======
TABLE II.--RELATIVE HUMIDITY, PER CENT.
======+=======================================================================+====== _t_
Difference between the dry and wet thermometers (_t-t'_).
_t_ (Dry +-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+(Dry ther.)
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
6.0
ther.) ------+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+------ 20
92
85
77
70
63
56
48
41
34
27
20
13
20 21
93
85
78
71
64
57
50
43
36
29
23
16
21 22
93
86
79
72
65
58
51
45
38
32
25
19
22 23
93
86
80
73
66
60
53
46
40
34
27
21
23 24
93
87
80
74
67
61
54
48
42
36
30
24
24
25
94
87
81
74
68
62
56
50
44
38
32
26
25 26
94
88
81
75
69
63
57
51
45
40
34
28
26 27
94
88
82
76
70
64
59
53
47
42
36
30
27 28
94
88
82
77
71
65
60
54
49
43
38
33
28 29
94
89
83
77
72
66
61
56
50
45
40
35
29
30
94
89
84
78
73
67
62
57
52
47
41
36
30 31
95
89
84
79
74
68
63
58
53
48
43
38
31 32
95
90
84
79
74
69
64
59
54
50
45
40
32 33
95
90
85
80
75
70
65
60
56
51
47
42
33 34
95
91
86
81
75
72
67
62
57
53
48
44
34
35
95
91
86
82
76
73
69
65
59
54
50
45
35 36
96
91
86
82
77
73
70
66
61
56
51
47
36 37
96
91
87
82
78
74
70
66
62
57
52
48
37 38
96
92
87
83
79
75
71
67
63
58
54
50
38 39
96
92
88
83
79
75
72
68
63
59
55
52
39
40
96
92
88
84
80
76
72
68
64
60
56
53
40 41
96
92
88
84
80
76
72
69
65
61
57
54
41 42
96
92
88
84
81
77
73
69
65
62
58
55
42 43
96
92
88
85
81
77
74
70
66
63
59
56
43 44
96
92
88
85
81
78
74
70
67
63
60
57
44
45
96
92
89
85
82
78
75
71
67
64
61
58
45 46
96
93
89
85
82
79
75
72
68
65
61
58
46 47
96
93
89
86
83
79
76
72
69
66
62
59
47 48
96
93
89
86
83
79
76
73
69
66
63
60
48 49
97
93
90
86
83
80
76
73
70
67
63
60
49
50
97
93
90
87
83
80
77
74
70
67
64
61
50 51
97
93
90
87
84
81
77
74
71
68
65
62
51 52
97
94
90
87
84
81
78
75
72
69
66
63
52 53
97
94
91
87
84
81
78
75
72
69
66
63
53 54
97
94
91
88
85
82
79
76
73
70
67
64
54
55
97
94
91
88
85
82
79
76
73
70
68
65
55 56
97
94
91
88
85
82
80
77
74
71
68
65
56 57
97
94
91
88
86
83
80
77
74
71
69
66
57 58
97
94
91
89
86
83
80
78
75
72
69
67
58 59
97
94
92
89
86
83
81
78
75
72
70
67
59
60
97
94
92
89
86
84
81
78
75
73
70
68
60 61
97
94
92
89
87
84
81
78
76
73
71
68
61 62
97
95
92
89
87
84
81
79
76
74
71
69
62 63
97
95
92
89
87
84
82
79
77
74
72
69
63 64
97
95
92
90
87
85
82
79
77
74
72
70
64
65
97
95
92
90
87
85
82
80
77
75
72
70
65 66
97
95
92
90
87
85
82
80
78
75
73
71
66 67
98
95
93
90
88
85
83
80
78
76
73
71
67 68
98
95
93
90
88
85
83
81
78
76
74
71
68 69
98
95
93
90
88
86
83
81
78
76
74
72
69
70
98
95
93
90
88
86
83
81
79
77
74
72
70 71
98
95
93
91
88
86
84
81
79
77
75
72
71 72
98
95
93
91
88
86
84
82
79
77
75
73
72 73
98
95
93
91
88
86
84
82
80
78
75
73
73 74
98
95
93
91
88
86
84
82
80
78
76
74
74
75
98
95
93
91
89
87
84
82
80
78
76
74
75 76
98
95
93
91
89
87
85
82
80
78
76
74
76 77
98
95
93
91
89
87
85
83
80
78
76
74
77 78
98
96
93
91
89
87
85
83
81
79
77
75
78 79
98
96
94
91
89
87
85
83
81
79
77
75
79
80
98
96
94
92
89
87
85
83
81
79
77
75
80 ------+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+------ _t._
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
6.0
_t._ ======+=====+=====+=====+=====+=====+=====+=====+=====+=====+=====+=====+=====+======
TABLE II.--RELATIVE HUMIDITY, PER CENT.
======+=====================================================================+===== _t_
Difference between the dry and wet thermometers (_t-t'_).
_t_ (Dry +----+----+----+----+----+----+----+----+-----+-----+-----+-----+-----+(Dry ther.)
6.0
6.5
7.0
7.5
8.0
8.5
9.0
9.5
10.0
10.5
11.0
11.5
12.0
ther.) ------+----+----+----+----+----+----+----+----+-----+-----+-----+-----+-----+------ 19
10
19
20
13
6
20 21
16
9
2
21 22
19
12
6
22 23
21
15
9
2
23 24
24
17
11
6
24
25
26
20
14
8
3
25 26
28
23
17
11
6
26 27
30
25
19
14
9
3
27 28
33
27
22
17
11
6
1
28 29
35
29
24
19
14
9
4
29
30
36
31
26
22
17
12
7
2
30 31
38
33
29
24
19
14
10
5
31 32
40
35
31
26
21
17
12
8
3
32 33
42
37
33
28
24
19
15
10
6
2
33 34
44
39
35
30
26
21
17
13
9
4
34
35
45
41
37
32
28
24
19
15
12
7
3
35 36
47
43
38
34
30
26
22
18
14
10
6
2
36 37
48
44
40
36
32
28
24
20
16
12
8
5
1
37 38
50
46
42
38
34
30
26
22
18
15
11
7
3
38 39
52
48
44
40
36
32
28
24
20
17
13
9
6
39
40
53
49
45
41
38
34
30
26
22
19
16
12
8
40 41
54
50
46
43
39
36
32
29
24
21
18
14
10
41 42
55
51
48
44
40
37
34
30
27
23
20
16
13
42 43
56
52
49
46
42
38
35
32
29
25
22
19
15
43 44
57
53
50
47
43
40
37
33
30
27
24
21
17
44
45
58
54
51
48
44
41
38
35
32
29
25
22
19
45 46
58
55
52
49
46
42
39
36
33
30
27
23
21
46 47
59
56
53
50
47
44
40
38
34
31
28
25
22
47 48
60
56
53
51
48
45
42
39
36
33
30
27
24
48 49
60
57
54
52
49
46
43
40
37
34
31
29
26
49
50
61
58
55
52
50
47
44
41
38
36
33
30
27
50 51
62
59
56
53
50
48
45
42
39
37
34
31
28
51 52
63
60
57
54
51
48
46
43
40
38
35
33
30
52 53
63
61
58
55
52
49
47
44
42
39
36
34
31
53 54
64
61
59
56
53
50
48
45
43
40
38
35
32
54
55
65
62
59
57
54
51
49
46
43
41
39
36
34
55 56
65
63
60
57
55
52
50
47
44
42
40
37
35
56 57
66
64
61
58
55
53
50
48
45
43
40
38
36
57 58
67
64
61
59
56
53
51
49
46
44
42
39
37
58 59
67
65
62
60
57
54
52
49
47
45
43
40
38
59
60
68
65
63
60
58
55
53
50
48
46
44
41
39
60 61
68
66
63
61
58
56
54
51
49
47
44
42
40
61 62
69
66
64
61
59
57
54
52
50
47
45
43
41
62 63
69
67
64
62
60
57
55
53
51
48
46
44
42
63 64
70
67
65
62
60
58
56
53
51
49
47
45
43
64
65
70
68
65
63
61
59
56
54
52
50
48
46
44
65 66
71
68
66
63
61
59
57
55
53
51
49
47
45
66 67
71
69
66
64
62
60
58
55
53
51
49
47
45
67 68
71
69
67
65
63
60
58
56
54
52
50
48
46
68 69
72
70
67
65
63
61
59
57
55
53
51
49
47
69
70
72
70
68
66
64
62
60
57
55
53
52
50
48
70 71
72
70
68
66
64
62
60
58
56
54
52
50
48
71 72
73
71
69
67
65
63
61
59
57
55
53
51
49
72 73
73
71
69
67
65
63
61
59
57
55
53
52
50
73 74
74
72
70
68
66
64
62
60
58
56
54
52
50
74
75
74
72
70
68
66
64
62
60
58
56
55
53
51
75 76
74
72
70
68
66
64
63
61
59
57
55
53
52
76 77
74
73
71
69
67
65
63
61
59
57
56
54
52
77 78
75
73
71
69
67
65
63
62
60
58
56
54
53
78 79
75
73
71
70
68
66
64
62
60
58
57
55
53
79
80
75
73
72
70
68
66
64
63
61
59
57
55
54
80 ------+----+----+----+----+----+----+----+----+-----+-----+-----+-----+-----+------ _t._
6.0
6.5
7.0
7.5
8.0
8.5
9.0
9.5
10.0
10.5
11.0
11.5
120
_t._ ======+====+====+====+====+====+====+====+====+=====+=====+=====+=====+=====+======
TABLE II.--RELATIVE HUMIDITY, PER CENT.
======+=============================================================================+====== _t_
Difference between the dry and wet thermometers (_t-t'_).
_t_ (Dry +-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+(Dry ther.)
12.0
12.5
13.0
13.5
14.0
14.5
15.0
15.5
16.0
16.5
17.0
17.5
18.0
ther.) ------+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+------ 40
8
5
1
40 41
10
7
4
41 42
13
10
6
3
42 43
15
12
9
5
2
43 44
17
14
11
8
5
1
44
45
19
16
13
10
7
4
1
45 46
21
18
15
12
9
6
3
46 47
22
20
16
14
11
8
5
3
47 48
24
21
19
16
13
10
7
5
2
48 49
26
23
20
17
15
12
9
7
4
1
49
50
27
24
22
19
16
14
11
9
6
4
1
50 51
28
26
23
21
18
16
13
10
8
5
3
51 52
30
27
24
22
20
17
15
12
10
7
5
52 53
31
29
26
24
21
19
16
14
12
9
7
4
2
53 54
32
30
28
25
23
20
18
15
13
11
8
6
4
54
55
34
31
29
26
24
22
19
17
15
12
10
8
6
55 56
35
33
30
28
25
23
21
19
16
14
12
10
8
56 57
36
34
32
29
27
24
22
20
18
16
13
11
9
57 58
37
35
33
30
28
26
24
21
19
17
15
13
11
58 59
38
36
34
31
29
27
25
23
21
18
16
14
12
59
60
39
37
34
32
30
28
26
24
22
20
18
16
14
60 61
40
38
35
33
32
29
27
25
23
21
19
17
15
61 62
41
39
37
34
32
30
28
26
24
22
20
18
16
62 63
42
40
38
35
33
31
29
28
26
24
22
20
18
63 64
43
41
38
36
34
32
30
29
27
25
23
21
19
64
65
44
42
39
37
35
33
31
29
28
26
24
22
20
65 66
45
42
40
38
36
34
32
30
29
27
25
23
22
66 67
45
43
41
39
37
35
33
32
30
28
26
25
23
67 68
46
44
42
40
38
36
34
33
31
29
27
26
24
68 69
47
45
43
41
39
37
35
33
32
30
28
26
25
69
70
48
46
44
42
40
38
36
34
33
31
29
27
26
70 71
48
46
45
43
41
39
37
35
34
32
30
28
27
71 72
49
47
45
43
42
40
38
36
35
33
31
30
28
72 73
50
48
46
44
42
41
39
37
35
34
32
30
29
73 74
50
48
47
45
43
41
40
38
36
35
33
31
30
74
75
51
49
47
46
44
42
40
39
37
35
34
32
31
75 76
52
50
48
46
45
43
41
39
38
36
35
33
31
76 77
52
50
49
47
45
44
42
40
39
37
35
34
32
77 78
53
51
49
48
46
44
43
41
39
38
36
35
33
78 79
53
52
50
48
47
45
43
42
40
39
37
36
34
79
80
54
52
51
49
47
45
44
42
41
39
38
36
35
80 ------+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+------ _t._
12.0
12.5
13.0
13.5
14.0
14.5
15.0
15.5
16.0
16.5
17.0
17.5
18.0
_t._ ======+=====+=====+=====+=====+=====+=====+=====+=====+=====+=====+=====+=====+=====+======
TABLE II.--RELATIVE HUMIDITY, PER CENT.
======+=============================================================================+====== _t_
Difference between the dry and wet thermometers (_t-t'_).
_t_ (Dry +-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+(Dry ther.)
18.0
19.0
20.0
21.0
22.0
23.0
24.0
25.0
26.0
27.0
28.0
29.0
30.0
ther.) ------+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+------- 55
6
1
55 56
8
3
56 57
9
5
57 58
11
7
2
58 59
12
8
4
59
60
14
10
6
2
60 61
15
11
7
3
61 62
16
13
9
5
1
62 63
18
14
10
7
3
63 64
19
15
12
8
5
1
64
65
20
17
13
10
6
3
65 66
22
18
14
11
8
4
1
66 67
23
19
16
12
9
6
2
67 68
24
20
17
14
10
7
4
1
68 69
25
22
18
15
12
8
5
2
69
70
26
23
19
16
13
10
7
4
1
70 71
27
24
20
17
14
11
8
5
2
71 72
28
24
22
18
15
12
9
6
3
1
72 73
29
25
22
19
16
13
10
8
5
2
73 74
30
26
23
20
18
15
12
9
6
3
1
74
75
31
27
24
21
19
16
13
10
7
5
2
75 76
31
28
25
22
20
17
14
11
8
6
3
1
76 77
32
29
26
23
20
18
15
12
10
7
4
2
77 78
33
30
27
24
21
19
16
13
11
8
6
3
1
78 79
34
31
28
25
22
19
17
14
12
9
7
4
2
79
80
35
32
29
26
23
20
18
15
13
10
8
6
3
80 ------+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+------ _t._
18.0
19.0
20.0
21.0
22.0
23.0
24.0
25.0
26.0
27.0
28.0
29.0
30.0
_t._ ======+=====+=====+=====+=====+=====+=====+=====+=====+=====+=====+=====+=====+=====+======
TABLE II.--RELATIVE HUMIDITY, PER CENT.
======+=======================================================================+====== _t_
Difference between the dry and wet thermometers (_t-t'_).
_t_ (Dry +-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+(Dry ther.)
1.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
9.0
10.0
11.0
12.0
ther.) ------+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+------- 80
96
92
87
83
79
75
72
68
64
61
57
54
80 81
96
92
88
84
80
76
72
68
65
61
58
54
81 82
96
92
88
84
80
76
72
69
65
62
58
55
82 83
96
92
88
84
80
76
73
69
66
62
59
55
83 84
96
92
88
84
80
77
73
69
66
63
59
56
84
85
96
92
88
84
80
77
73
70
66
63
60
56
85 86
96
92
88
84
81
77
73
70
67
63
60
57
86 87
96
92
88
84
81
77
74
70
67
64
60
57
87 88
96
92
88
85
81
77
74
71
67
64
61
58
88 89
96
92
88
85
81
78
74
71
68
64
61
58
89
90
96
92
88
85
81
78
75
71
68
65
62
59
90 91
96
92
89
85
82
78
75
71
68
65
62
59
91 92
96
92
89
85
82
78
75
72
69
65
62
59
92 93
96
93
89
85
82
78
75
72
69
66
63
60
93 94
96
93
89
86
82
79
75
72
69
66
63
60
94
95
96
93
89
86
82
79
76
72
69
66
63
60
95 96
96
93
89
86
82
79
76
73
70
67
64
61
96 97
96
93
89
86
82
79
76
73
70
67
64
61
97 98
96
93
89
86
83
79
76
73
70
67
64
61
98 99
96
93
89
86
83
80
76
73
70
68
65
62
99
100
97
93
90
86
83
80
77
74
71
68
65
62
100 101
97
93
90
86
83
80
77
74
71
68
65
62
101 102
97
93
90
86
83
80
77
74
71
68
65
63
102 103
97
93
90
87
83
80
77
74
71
69
66
63
103 104
97
93
90
87
83
80
77
74
72
69
66
63
104
105
97
93
90
87
84
81
78
75
72
69
66
64
105 106
97
93
90
87
84
81
78
75
72
69
66
64
106 107
97
93
90
87
84
81
78
75
72
69
67
64
107 108
97
93
90
87
84
81
78
75
72
70
67
64
108 109
97
93
90
87
84
81
78
75
73
70
67
65
109
110
97
94
90
87
84
81
78
76
73
70
67
65
110 ------+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+------ _t._
1.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
9.0
10.0
11.0
12.0
_t._ ======+=====+=====+=====+=====+=====+=====+=====+=====+=====+=====+=====+=====+======
TABLE II.--RELATIVE HUMIDITY, PER CENT.
======+=============================================================================+====== _t_
Difference between the dry and wet thermometers (_t-t'_).
_t_ (Dry +-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+(Dry ther.)
12.0
13.0
14.0
15.0
16.0
17.0
18.0
19.0
20.0
21.0
22.0
23.0
24.0
ther.) ------+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+------ 80
54
51
47
44
41
38
35
32
29
26
23
20
18
80 81
54
51
48
44
41
38
35
33
30
27
24
21
19
81 82
55
52
48
45
42
39
36
33
31
28
25
22
20
82 83
55
52
49
46
43
40
37
34
31
29
26
23
21
83 84
56
53
49
46
44
41
38
35
32
29
27
24
22
84
85
56
53
50
47
44
41
38
36
33
30
28
25
22
85 86
57
54
51
48
45
42
39
36
34
31
29
26
23
86 87
57
54
51
48
45
42
40
37
34
32
30
27
24
87 88
58
55
52
49
46
43
40
38
35
32
30
27
25
88 89
58
55
52
49
46
44
41
38
36
33
31
28
26
89
90
59
56
53
50
47
44
41
39
36
34
32
29
26
90 91
59
56
53
50
47
45
42
39
37
35
33
30
27
91 92
59
56
54
51
48
45
43
40
37
35
33
30
28
92 93
60
57
54
51
48
46
43
41
38
36
34
31
29
93 94
60
57
54
52
49
46
44
41
39
36
34
31
29
94
95
60
58
55
52
49
47
44
42
39
37
35
32
30
95 96
61
58
55
53
50
47
45
42
40
37
36
33
30
96 97
61
58
56
53
50
48
45
43
40
38
36
33
31
97 98
61
59
56
53
51
48
46
43
41
38
37
34
32
98 99
62
59
56
54
51
49
46
44
41
39
37
34
32
99
100
62
59
57
54
51
49
47
44
42
39
37
35
33
100 101
62
60
57
54
52
49
47
45
42
40
38
36
33
101 102
63
60
57
55
52
50
47
45
43
40
38
36
34
102 103
63
60
58
55
53
50
48
45
43
41
39
37
34
103 104
63
61
58
55
53
51
48
46
44
41
39
37
35
104
105
64
61
58
56
53
51
49
46
44
42
40
38
35
105 106
64
61
59
56
54
51
49
47
44
42
40
38
36
106 107
64
62
59
57
54
52
49
47
45
43
41
38
36
107 108
64
62
59
57
54
52
50
47
45
43
41
39
37
108 109
65
62
60
57
55
52
50
48
46
44
41
39
37
109
110
65
62
60
57
55
53
50
48
46
44
42
40
38
110 ------+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+------ _t._
12.0
13.0
14.0
15.0
16.0
17.0
18.0
19.0
20.0
21.0
22.0
23.0
24.0
_t._ ======+=====+=====+=====+=====+=====+=====+=====+=====+=====+=====+=====+=====+=====+======
TABLE II.--RELATIVE HUMIDITY, PER CENT.
======+=============================================================================+====== _t_
Difference between the dry and wet thermometers (_t-t'_).
_t_ (Dry +-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+(Dry ther.)
24.0
25.0
26.0
27.0
28.0
29.0
30.0
31.0
32.0
33.0
34.0
35.0
36.0
ther.) ------+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+------ 80
18
15
13
10
8
6
3
1
80 81
19
16
14
11
9
7
4
2
81 82
20
17
15
12
10
8
5
3
1
82 83
21
18
16
13
11
9
6
4
2
83 84
22
19
17
14
12
10
8
5
3
1
84
85
22
20
17
15
13
11
9
6
4
2
85 86
23
21
18
16
14
12
10
7
5
3
1
86 87
24
22
19
17
15
13
11
8
6
4
2
87 88
25
22
20
18
16
14
12
9
7
5
3
1
88 89
26
23
21
19
16
14
12
10
8
6
4
2
1
89
90
26
24
22
20
17
15
13
11
9
7
5
3
2
90 91
27
25
23
20
18
16
14
12
10
8
6
4
3
91 92
28
26
23
21
19
17
15
13
11
9
7
5
3
92 93
29
26
24
22
20
18
16
14
12
10
8
6
4
93 94
29
27
25
23
21
18
16
14
13
11
9
7
5
94
95
30
28
25
23
21
19
17
15
13
11
10
8
6
95 96
30
28
26
24
22
20
18
16
14
12
10
9
7
96 97
31
29
27
25
23
21
19
17
15
13
11
10
8
97 98
32
29
27
25
23
21
19
18
16
14
12
10
9
98 99
32
30
28
26
24
22
20
18
16
15
13
11
10
99
100
33
31
29
27
25
23
21
19
17
15
14
12
10
100 101
33
31
29
27
25
23
21
20
18
16
14
13
11
101 102
34
32
30
28
26
24
22
20
19
17
15
13
12
102 103
34
32
30
28
26
25
23
21
19
17
16
14
12
103 104
35
33
31
29
27
25
23
22
20
18
16
15
13
104
105
35
33
31
30
28
26
24
22
20
19
17
15
14
105 106
36
34
32
30
28
26
25
23
21
19
18
16
14
106 107
36
34
32
31
29
27
25
23
22
20
18
17
15
107 108
37
35
33
31
29
27
26
24
22
21
19
17
16
108 109
37
35
33
32
30
28
26
25
23
21
20
18
16
109
110
38
36
34
32
30
28
27
25
23
22
20
19
17
110 ------+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+------ _t._
24.0
25.0
26.0
27.0
28.0
29.0
30.0
31.0
32.0
33.0
34.0
35.0
36.0
_t._ ======+=====+=====+=====+=====+=====+=====+=====+=====+=====+=====+=====+=====+=====+======
TABLE II.--RELATIVE HUMIDITY, PER CENT.
======+=======================================================================+====== _t_
Difference between the dry and wet thermometers (_t-t'_).
_t_ (Dry +-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+(Dry ther.)
36.0
37.0
38.0
39.0
40.0
41.0
42.0
43.0
44.0
45.0
46.0
48.0
Ther.) ------+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+------ 89
1
89
90
2
90 91
3
1
91 92
3
2
1
92 93
4
3
2
93 94
5
4
3
0
94
95
6
5
4
1
95 96
7
5
5
2
1
96 97
8
6
6
3
1
97 98
9
7
7
4
2
1
98 99
10
8
7
5
3
2
0
99
100
10
9
8
6
4
3
1
100 101
11
9
9
6
5
3
2
0
101 102
12
10
9
7
6
4
3
1
102 103
12
11
9
8
6
5
4
2
1
103 104
13
12
10
8
7
6
5
3
2
104
105
14
12
11
9
8
6
5
4
2
1
105 106
14
13
11
10
8
7
6
4
3
2
0
106 107
15
14
12
11
9
8
6
5
4
3
1
107 108
16
14
13
11
10
9
7
6
5
3
2
108 109
16
15
13
12
10
9
8
7
5
4
3
109
110
17
15
14
13
11
10
8
7
6
5
3
1
110 ------+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+------ _t._
36.0
37.0
38.0
39.0
40.0
41.0
42.0
43.0
44.0
45.0
46.0
48.0
_t._ ======+=====+=====+=====+=====+=====+=====+=====+=====+=====+=====+=====+=====+======
TABLE III.--REDUCTION OF BAROMETER READING TO 32.
===+=========================================================================================
Inches.
+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+----- F
24.0
24.5
25.0
25.5
26.0
26.5
27.0
27.5
28.0
28.5
29.0
29.5
30.0
30.5
31.0 ---+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+----- 30
-.003
-.003
-.003
-.003
-.003
-.003
-.003
-.003
-.003
-.004
-.004
-.004
-.004
-.004
-.004 31
.005
.005
.005
.005
.006
.006
.006
.006
.006
.006
.006
.006
.006
.007
.007 32
.007
.008
.008
.008
.008
.008
.008
.008
.009
.009
.009
.009
.009
.009
.009 33
.010
.010
.010
.010
.010
.010
.011
.011
.011
.011
.012
.012
.012
.012
.012 34
.012
.012
.012
.012
.013
.013
.013
.013
.014
.014
.014
.014
.015
.015
.015
35
.014
.014
.014
.015
.015
.015
.016
.016
.016
.016
.017
.017
.017
.018
.018 36
.016
.016
.017
.017
.017
.018
.018
.018
.019
.019
.019
.020
.020
.020
.021 37
.018
.019
.019
.019
.020
.020
.021
.021
.021
.022
.022
.022
.023
.023
.024 38
.020
.021
.021
.022
.022
.022
.023
.023
.024
.024
.025
.025
.026
.026
.026 39
.023
.023
.024
.024
.024
.025
.025
.026
.026
.027
.027
.028
.028
.029
.029
40
.025
.025
.026
.026
.027
.027
.028
.028
.029
.030
.030
.030
.031
.031
.032 41
.027
.027
.028
.029
.029
.030
.030
.031
.031
.032
.033
.033
.034
.034
.035 42
.029
.030
.030
.031
.032
.032
.033
.033
.034
.034
.035
.036
.036
.037
.038 43
.031
.032
.033
.033
.034
.035
.035
.036
.036
.037
.038
.038
.039
.040
.040 44
.033
.034
.035
.035
.036
.037
.038
.038
.039
.040
.040
.041
.042
.042
.043
45
.036
.037
.037
.038
.039
.039
.040
.041
.042
.042
.043
.044
.045
.045
.046 46
.038
.038
.039
.040
.041
.042
.043
.043
.044
.045
.046
.046
.047
.048
.049 47
.040
.041
.042
.042
.043
.044
.045
.046
.047
.048
.048
.049
.050
.051
.052 48
.042
.043
.044
.045
.046
.047
.047
.048
.049
.050
.051
.052
.053
.053
.054 49
.044
.045
.046
.047
.048
.049
.050
.051
.052
.052
.054
.054
.055
.056
.057
50
.046
.047
.048
.049
.050
.051
.052
.053
.054
.055
.056
.057
.058
.059
.060 51
.049
.050
.051
.052
.053
.054
.055
.056
.057
.058
.059
.060
.061
.062
.063 52
.051
.052
.053
.054
.055
.056
.057
.058
.059
.060
.061
.062
.064
.065
.066 53
.053
.054
.055
.056
.057
.058
.060
.061
.062
.063
.064
.065
.066
.067
.068 54
.055
.056
.057
.058
.060
.061
.062
.063
.064
.065
.067
.068
.069
.070
.071
55
.057
.058
.060
.061
.062
.063
.064
.065
.066
.068
.069
.070
.071
.073
.074 56
.060
.061
.062
.063
.064
.065
.067
.068
.069
.070
.072
.073
.074
.075
.077 57
.062
.063
.064
.065
.067
.068
.069
.070
.072
.073
.075
.076
.077
.078
.080 58
.064
.065
.066
.068
.069
.070
.071
.073
.074
.076
.077
.078
.080
.081
.082 59
.066
.068
.069
.070
.072
.073
.074
.075
.077
.078
.080
.081
.083
.084
.085
60
.068
.070
.071
.072
.074
.076
.077
.078
.079
.081
.082
.084
.085
.086
.088 61
.070
.072
.073
.074
.076
.077
.079
.080
.082
.083
.085
.086
.088
.089
.091 62
.073
.074
.076
.077
.079
.080
.082
.083
.085
.086
.088
.089
.091
.092
.094 63
.075
.076
.078
.079
.081
.082
.084
.085
.087
.088
.090
.091
.093
.095
.096 64
.077
.078
.080
.081
.083
.085
.086
.088
.090
.091
.093
.094
.096
.097
.099
65
-.079
-.080
-.082
-.084
-.086
-.087
-.089
-.090
-.092
-.093
-.095
-.097
-.099
-.100
-.102 ===+=========================================================================================
TABLE III.--REDUCTION OF BAROMETER READING TO 32.--_Continued._
===+=========================================================================================
Inches.
+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+----- F
24.0
24.5
25.0
25.5
26.0
26.5
27.0
27.5
28.0
28.5
29.0
29.5
30.0
30.5
31.0 ---+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+----- 65
-.079
-.080
-.082
-.084
-.086
-.087
-.089
-.090
-.092
-.093
-.095
-.097
-.099
-.100
-.102 66
.081
.083
.085
.086
.088
.089
.091
.093
.095
.096
.098
.099
.101
.103
.105 67
.083
.085
.087
.088
.090
.092
.094
.095
.097
.099
.101
.102
.104
.106
.108 68
.085
.087
.089
.090
.093
.094
.096
.098
.100
.101
.103
.105
.107
.108
.110 69
.088
.089
.091
.093
.095
.097
.099
.100
.102
.104
.106
.107
.110
.111
.113
70
.090
.092
.094
.096
.097
.099
.101
.103
.105
.106
.109
.110
.112
.114
.116 71
.092
.094
.096
.098
.100
.101
.103
.105
.107
.109
.111
.113
.115
.116
.119 72
.094
.096
.098
.100
.102
.104
.106
.108
.110
.112
.114
.116
.118
.120
.122 73
.096
.098
.100
.102
.104
.106
.108
.110
.112
.114
.116
.118
.120
.122
.124 74
.098
.100
.103
.105
.107
.109
.111
.113
.115
.117
.119
.121
.123
.125
.127
75
.101
.102
.105
.106
.109
.111
.113
.115
.117
.119
.122
.124
.126
.128
.130 76
.103
.104
.107
.109
.111
.113
.116
.118
.120
.122
.124
.126
.128
.130
.133 77
.105
.107
.109
.111
.114
.116
.118
.120
.122
.124
.127
.129
.131
.133
.136 78
.107
.109
.112
.113
.116
.118
.120
.122
.125
.127
.129
.131
.134
.136
.138 79
.109
.111
.114
.116
.118
.120
.123
.125
.127
.129
.132
.134
.137
.139
.141
80
.111
.113
.116
.118
.121
.123
.125
.127
.130
.132
.135
.137
.139
.141
.144 81
.114
.116
.118
.120
.123
.125
.128
.130
.132
.134
.137
.139
.142
.144
.147 82
.116
.118
.121
.122
.125
.128
.130
.132
.135
.137
.140
.142
.145
.147
.149 83
.118
.120
.123
.125
.128
.130
.133
.135
.138
.140
.142
.145
.147
.149
.152 84
.120
.122
.125
.127
.130
.132
.135
.138
.140
.142
.145
.147
.150
.152
.155
85
.122
.124
.127
.129
.132
.134
.137
.139
.143
.145
.148
.150
.153
.155
.158 86
.124
.126
.128
.130
.135
.137
.140
.143
.145
.148
.150
.153
.155
.158
.161 87
.126
.129
.132
.134
.137
.139
.142
.144
.148
.150
.153
.155
.158
.161
.163 88
.129
.131
.134
.137
.139
.142
.145
.147
.150
.152
.155
.158
.161
.163
.166 89
.131
.133
.136
.139
.142
.144
.147
.150
.153
.155
.158
.161
.164
.166
.169
90
.133
.136
.138
.141
.144
.147
.150
.153
.155
.157
.161
.164
.166
.169
.172 91
.135
.138
.141
.143
.146
.149
.152
.155
.158
.160
.163
.166
.169
.172
.175 92
.137
.140
.143
.146
.149
.152
.154
.157
.160
.163
.166
.169
.172
.175
.177 93
.139
.142
.145
.148
.151
.154
.157
.160
.163
.166
.168
.171
.174
.177
.180 94
.142
.145
.147
.150
.153
.156
.159
.162
.165
.168
.171
.174
.177
.180
.183
95
.144
.147
.150
.153
.156
.159
.162
.165
.168
.171
.174
.177
.180
.183
.186 96
.146
.149
.152
.155
.158
.161
.164
.167
.170
.173
.176
.179
.182
.185
.188 97
.148
.151
.154
.157
.160
.164
.167
.170
.173
.176
.179
.182
.185
.188
.191 98
.150
.153
.156
.160
.163
.166
.169
.172
.175
.178
.181
.185
.188
.191
.194 99
.152
.155
.159
.162
.165
.168
.171
.175
.178
.181
.184
.187
.190
.194
.197
100
-.154
-.157
-.161
-.164
-.167
-.171
-.174
-.177
-.180
-.184
-.187
-.190
-.193
-.197
-.200 ---+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----
TABLE IV.--TABLE FOR REDUCING OBSERVATIONS OF THE BAROMETER TO SEA LEVEL, CORRECTION ADDITIVE.
==========+======================================================================= Height, in
Temperature of external air--degrees Fahrenheit.
feet.
+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----
-20
-10
0
10
20
30
40
50
60
70
80
90
100 ----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+----- 10
.013
.013
.012
.012
.012
.012
.011
.011
.011
.011
.010
.010
.010 20
.026
.025
.025
.024
.023
.023
.023
.022
.022
.021
.021
.020
.020 30
.039
.038
.037
.036
.035
.034
.034
.033
.032
.032
.031
.030
.030 40
.052
.050
.049
.048
.047
.046
.045
.044
.043
.042
.041
.040
.040
50
.065
.063
.061
.060
.059
.058
.056
.055
.054
.053
.052
.051
.050 60
.077
.076
.074
.072
.070
.069
.068
.066
.065
.063
.062
.061
.059 70
.090
.088
.086
.084
.082
.081
.078
.077
.076
.074
.072
.071
.069 80
.103
.101
.098
.096
.094
.092
.090
.088
.086
.084
.082
.081
.079 90
.116
.113
.111
.108
.105
.104
.101
.099
.097
.095
.093
.091
.089
100
.129
.126
.123
.120
.117
.115
.112
.110
.108
.105
.103
.101
.099 110
.142
.139
.135
.132
.129
.126
.123
.121
.119
.116
.113
.111
.109 120
.155
.151
.148
.144
.140
.138
.134
.132
.129
.126
.124
.121
.119 130
.168
.164
.160
.156
.152
.149
.146
.143
.140
.137
.134
.131
.129 140
.181
.176
.172
.168
.164
.161
.157
.154
.151
.147
.144
.141
.139
150
.194
.189
.185
.180
.176
.172
.168
.165
.162
.158
.155
.152
.149 160
.206
.201
.197
.192
.187
.183
.179
.176
.172
.168
.165
.162
.158 170
.219
.214
.209
.204
.199
.195
.190
.187
.183
.179
.175
.172
.168 180
.232
.227
.222
.216
.211
.206
.202
.198
.194
.189
.185
.182
.178 190
.245
.239
.234
.228
.222
.218
.213
.209
.204
.200
.196
.192
.188
200
.258
.252
.246
.240
.234
.229
.224
.220
.215
.210
.206
.202
.198 210
.271
.264
.258
.252
.246
.240
.235
.231
.226
.221
.216
.212
.208 220
.284
.277
.270
.264
.257
.252
.246
.242
.236
.231
.227
.222
.218 230
.296
.289
.283
.276
.269
.263
.257
.253
.247
.242
.237
.232
.228 240
.309
.302
.295
.288
.281
.275
.269
.264
.258
.252
.248
.242
.238
250
.322
.314
.307
.300
.293
.286
.280
.275
.269
.263
.258
.253
.248 260
.335
.327
.319
.311
.304
.297
.291
.285
.279
.273
.268
.263
.257 270
.348
.339
.331
.323
.316
.309
.302
.296
.290
.284
.278
.273
.267 280
.360
.352
.344
.335
.328
.320
.314
.307
.301
.294
.288
.283
.277 290
.373
.364
.356
.347
.339
.332
.325
.318
.311
.305
.299
.293
.287
300
.386
.377
.368
.359
.351
.343
.336
.329
.322
.315
.309
.303
.297 310
.399
.389
.380
.371
.363
.354
.347
.340
.333
.326
.319
.313
.307 320
.412
.402
.392
.383
.374
.366
.358
.351
.343
.336
.329
.323
.317 330
.424
.414
.404
.395
.386
.377
.369
.362
.354
.347
.340
.333
.326 340
.437
.427
.416
.407
.397
.389
.380
.373
.365
.357
.350
.343
.336
350
.450
.439
.429
.419
.409
.400
.392
.384
.376
.368
.360
.353
.346 360
.463
.451
.441
.430
.421
.411
.403
.394
.386
.378
.370
.363
.356 370
.476
.464
.453
.442
.432
.423
.414
.405
.397
.389
.380
.373
.366 380
.488
.476
.465
.454
.444
.434
.425
.416
.408
.399
.391
.383
.375 390
.501
.489
.477
.466
.455
.446
.436
.427
.418
.410
.401
.393
.385
400
.514
.501
.489
.478
.467
.457
.447
.438
.429
.420
.411
.403
.395 410
.527
.513
.501
.490
.479
.468
.458
.449
.440
.430
.421
.413
.405 420
.539
.526
.513
.502
.490
.480
.469
.460
.450
.441
.431
.423
.415 430
.552
.538
.525
.513
.502
.491
.480
.470
.461
.451
.442
.433
.425 440
.565
.551
.537
.525
.513
.502
.491
.481
.471
.462
.452
.443
.434
450
.578
.563
.550
.537
.525
.513
.503
.492
.482
.472
.462
.453
.444 460
.590
.575
.562
.549
.537
.525
.514
.503
.493
.482
.472
.463
.454 470
.603
.588
.574
.561
.548
.536
.525
.514
.503
.493
.482
.473
.464 480
.616
.600
.586
.572
.560
.547
.536
.524
.514
.503
.493
.483
.474 490
.628
.613
.598
.584
.571
.559
.547
.535
.524
.514
.503
.493
.483
500
.641
.625
.610
.596
.583
.570
.558
.546
.535
.524
.513
.503
.493 510
.654
.637
.622
.608
.594
.581
.569
.557
.545
.534
.523
.513
.503 520
.666
.650
.634
.620
.606
.593
.580
.568
.556
.545
.533
.523
.513 530
.679
.662
.646
.631
.617
.604
.591
.578
.566
.555
.544
.533
.522 540
.691
.675
.658
.643
.629
.615
.602
.589
.577
.565
.554
.543
.532 ====+=====+=====+=====+=====+=====+=====+=====+=====+=====+=====+=====+=====+=====
TABLE IV.--FOR REDUCING OBSERVATIONS OF THE BAROMETER TO SEA LEVEL.--_Continued._
==========+======================================================================= Height, in
Temperature of external air--degrees Fahrenheit.
feet.
+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----
-20
-10
0
10
20
30
40
50
60
70
80
90
100 ----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+----- 550
.704
.687
.670
.655
.640
.626
.613
.600
.587
.575
.564
.553
.542 560
.717
.699
.683
.667
.652
.638
.624
.611
.598
.586
.574
.563
.552 570
.729
.712
.695
.679
.663
.649
.635
.622
.608
.596
.584
.573
.562 580
.742
.724
.707
.690
.675
.660
.646
.632
.619
.606
.595
.583
.571 590
.754
.737
.719
.702
.686
.672
.657
.643
.629
.617
.605
.593
.581
600
.767
.749
.731
.714
.698
.683
.668
.654
.640
.627
.615
.603
.591 610
.780
.761
.743
.726
.709
.694
.679
.665
.650
.637
.625
.613
.601 620
.792
.774
.755
.738
.721
.705
.690
.675
.661
.648
.635
.623
.611 630
.805
.786
.767
.749
.732
.717
.701
.686
.671
.658
.645
.633
.620 640
.817
.798
.779
.761
.744
.728
.712
.697
.682
.668
.655
.643
.630
650
.830
.811
.791
.773
.755
.739
.723
.708
.692
.679
.666
.653
.640 660
.843
.823
.803
.785
.767
.750
.734
.718
.703
.689
.676
.662
.650 670
.855
.835
.815
.797
.778
.761
.745
.729
.713
.699
.686
.672
.660 680
.868
.847
.827
.808
.790
.773
.756
.740
.724
.709
.696
.682
.669 690
.880
.860
.839
.820
.801
.784
.767
.750
.734
.720
.706
.692
.679
700
.893
.872
.851
.832
.813
.795
.778
.761
.745
.730
.716
.702
.689 710
.905
.884
.863
.844
.824
.806
.789
.772
.755
.740
.726
.712
.698 720
.918
.896
.875
.855
.836
.817
.800
.782
.766
.751
.736
.722
.708 730
.930
.909
.887
.867
.847
.829
.811
.793
.776
.761
.746
.732
.718 740
.943
.921
.899
.879
.859
.840
.822
.804
.787
.771
.756
.742
.728
750
.955
.933
.911
.891
.870
.851
.833
.815
.797
.782
.767
.752
.738 760
.968
.945
.922
.902
.881
.862
.843
.825
.808
.792
.777
.761
.747 770
.980
.957
.934
.914
.893
.873
.854
.836
.818
.802
.787
.771
.757 780
.993
.970
.946
.926
.904
.885
.865
.847
.829
.812
.797
.781
.767 790
1.005
.982
.958
.937
.916
.896
.876
.857
.839
.823
.807
.791
.776
800
1.018
.994
.970
.949
.927
.907
.887
.868
.850
.833
.817
.801
.786 810
1.030
1.006
.982
.961
.938
.918
.898
.878
.860
.843
.827
.811
.796 820
1.043
1.018
.994
.972
.950
.929
.909
.889
.871
.854
.937
.821
.805 830
1.055
1.031
1.006
.984
.961
.940
.920
.900
.881
.864
.847
.831
.815 840
1.068
1.043
1.018
.995
.973
.951
.931
.911
.892
.874
.857
.841
.825
850
1.080
1.055
1.030
1.007
.984
.962
.942
.922
.902
.885
.867
.851
.835 860
1.093
1.067
1.041
1.019
.995
.974
.952
.932
.913
.895
.877
.860
.844 870
1.105
1.079
1.053
1.030
1.007
.985
.963
.943
.923
.905
.887
.870
.854 880
1.118
1.092
1.065
1.042
1.018
.996
.974
.954
.934
.915
.897
.880
.864 890
1.130
1.104
1.077
1.053
1.030
1.007
.985
.904
.944
.926
.907
.890
.873
900
1.143
1.116
1.089
1.065
1.041
1.018
.996
.975
.955
.936
.917
.900
.883 910
1.155
1.128
1.101
1.077
1.052
1.029
1.007
.986
.965
.946
.927
.910
.893 920
1.168
1.140
1.113
1.088
1.064
1.040
1.018
.996
.976
.956
.937
.920
.902 930
1.180
1.152
1.125
1.100
1.075
1.051
1.029
1.007
.986
.967
.947
.929
.912 940
1.193
1.164
1.137
1.111
1.086
1.062
1.040
1.017
.997
.977
.957
.939
.921
950
1.205
1.177
1.149
1.123
1.098
1.074
1.051
1.028
1.007
.987
.967
.949
.931 960
1.217
1.189
1.160
1.135
1.109
1.085
1.061
1.039
1.017
.997
.977
.959
.941 970
1.230
1.201
1.172
1.146
1.120
1.096
1.072
1.049
1.028
1.007
.987
.969
.950 980
1.242
1.213
1.184
1.158
1.131
1.107
1.083
1.060
1.038
1.018
.997
.978
.960 990
1.255
1.225
1.196
1.169
1.143
1.118
1.094
1.070
1.049
1.028
1.007
.988
.969
1000
1.267
1.237
1.208
1.181
1.154
1.129
1.105
1.081
1.059
1.038
1.017
.998
.979 1010
1.279
1.249
1.220
1.192
1.165
1.140
1.116
1.092
1.069
1.048
1.027
1.008
.989 1020
1.292
1.261
1.232
1.204
1.177
1.151
1.127
1.102
1.080
1.058
1.037
1.018
.998 1030
1.304
1.273
1.243
1.215
1.188
1.162
1.137
1.113
1.090
1.069
1.047
1.027
1.008 1040
1.317
1.285
1.255
1.227
1.199
1.173
1.148
1.123
1.101
1.079
1.057
1.037
1.017
1050
1.329
1.298
1.267
1.238
1.211
1.184
1.159
1.134
1.111
1.089
1.067
1.047
1.027 1060
1.341
1.310
1.279
1.250
1.222
1.195
1.170
1.145
1.121
1.099
1.077
1.057
1.037 1070
1.354
1.322
1.291
1.261
1.233
1.206
1.181
1.155
1.132
1.109
1.087
1.067
1.046 1080
1.366
1.334
1.302
1.273
1.244
1.217
1.191
1.166
1.142
1.120
1.097
1.076
1.056 1090
1.379
1.346
1.314
1.284
1.256
1.228
1.202
1.176
1.153
1.130
1.107
1.086
1.065 ====+=====+=====+=====+=====+=====+=====+=====+=====+=====+=====+=====+=====+=====
TABLE IV.--FOR REDUCING OBSERVATIONS OF THE BAROMETER TO SEA LEVEL.--_Continued._
==========+======================================================================= Height, in
Temperature of external air--degrees Fahrenheit.
