Table I.—Temperature of the Dew-Point, in Degrees Fahrenheit.
| t |
Difference between the dry and wet thermometers (t-t′). |
t |
| (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 |
(Dry 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 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 |
(Dry 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 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 |
(Dry 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 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 |
(Dry 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. |