34 
The: Colorado Experiment Station 
TABLE XVIII—MONTHLY MEAN DEW POINT V 2 (7A + 7P) 
At the Colorado Experiment Station, Fort Collins, Colorado. 
Date. 
Jan. 
Feb. 
Mar. 
Apr. 
May 
June| July'lAug.lsept. 
i 1 I 
Oct. 
Nov. 
Dec. 
Yr. 
1887 . 
28.0 
55.2 
33.4 
23.4 
12.3 
• • • • 
1888. 
28.2 
24.5 
21.8 
42.6 
40.2 
48.4 
54.6 
51.3 
45.7 
32.9 
25.7 
15.7 
36.0 
1 889 . 
9.6 
14.7 
2S.4 
34.1 
39.2 
49.1 
54.5 
51.1 
34.2 
30.9 
19.9 
20.1 
32.2 
1890. 
11.2 
13.0 
17.7 
30.3 
39.0 
44.2 
55.4 
52.2 
37.5 
26.2 
20.2 
15.6 
30.2 
1891. 
12.2 
10.9 
20.9 
29.7 
42.6 
50.7 
55.2 
53.0 
44.1 
25.0 
18.4 
14.1 
31.4 
1892. 
10.1 
19.2 
21.3 
25.4 
37.6 
49.8 
55.2 
49.2 
38.6 
30.0 
18.5 
12.3 
30.6 
1893. 
10.0 
9.7 
17.2 
20.8 
34.6 
45.5 
51.8 
49.7 
37.0 
24.3 
15.2 
16.6 
27.7 
1894. 
7.4 
4.8 
16.5 
25.9 
37.6 
44.7 
52.6 
51.6 
39.6 
26.6 
19.1 
12.2 
28.2 
1895. 
11.7 
9.0 
17.3 
26.6 
37.2 
47.5 
52.7 
52.6 
39.9 
27.9 
15.5 
10.2 
29.0 
1896 . 
10.4 
12.0 
19.8 
26.5 
32.5 
50.5 
56.6 
51.5 
46.2 
30.4 
12.5 
15.7 
30.4 
1897 . 
6.6 
14.1 
19.8 
29.5 
44.6 
50.5 
53.3 
53.6 
48.0 
32.3 
21.3 
12.1 
32.1 
1 898 . 
11.0 
16.2 
15.2 
27.3 
40.4 
49.1 
52.2 
50.6 
37.0 
24.0 
16.5 
8.4 
29.0 
1899. 
10.6 
2.4 
18.8 
24.6 
34.6 
44.6 
54.8 
50.3 
41.6 
30.7 
23.1 
13.1 
29.1 
1 900. 
15.5 
11.6 
24.2 
34.8 
43.4 
51.3 
51.3 
49.0 
42.4 
30.3 
17.4 
10.9 
31.8 
1901. 
10.7 
12.2 
18.8 
30.0 
42.8 
49.8 
56.7 
54.6 
40.5 
31.6 
20.4 
16.5 
32.0 
1902. 
9.9 
17.0 
18.3 
29.0 
40.8 
48.2 
52.6 
50.7 
38.9 
34.3 
20.9 
14.0 
31.2 
1903 . 
15.5 
4.5 
22.6 
29.0 
38.1 
51.3 
54.2 
54.2 
41.1 
30.8 
22.4 
13.6 
31.4 
1904. 
10.2 
15.6 
21.9 
27.1 
41.1 
50.4 
54.6 
53.5 
45.0 
31.4 
15.1 
17.8 
32.0 
1905. 
17.5 
11.9 
28.2 
32.3 
40.2 
52.4 
53.6 
54.1 
42.4 
26.4 
21.9 
7.9 
32.4 
1906. 
10.3 
10.2 
16.6 
31.7 
39.2 
47.7 
53.9 
52.9 
47.8 
30.8 
22.6 
20.4 
32.0 
1907. 
15.0 
18.0 
21.3 
28.6 
37.4 
45.4 
55.7 
52.3 
42.8 
34.3 
17.4 
14.7 
31.9 
1908 . 
9.5 
12.0 
17.0 
23.7 
35.6 
45.7 
54.7 
55.0 
44.3 
30.1 
18.4 
14.7 
30.1 
1909. 
17.2 
13.9 
25.4 
25.9 
32.7 
51.2 
57.6 
56.6 
46.9 
28.5 
24.2 
9.1 
32.4 
1910. 
9.9 
8.6 
18.3 
23.2 
39.2 
47.5 
52.7 
51.2 
45.3 
31.5 
25.4 
16.7 
30.8 
1911. 
15.3 
11.5 
21.4 
25.4 
35.2 
49.2 
52.2 
49.6 
42.2 
29.2 
16.2 
9.8 
29.8 
Average. . . | 
12.3 
12.4 
20.4 
28.5 
39.0 | 48.5 
54.1 
52.2 
42.0 
29.8 
19.7 
13.8 
31.1 
Maximum.. | 
28.2 
24.5 
28.4 
42.0 | 48.0 | 52.4 
57.6 
56.6 
48.0 
34.3 
25.7 
20.4 
36.0 
Minimum.Jj 6.6 
2.4 
15.2 
20.8 
32.5 
44.2 
51.3 
49.0 
34.2 
24.0 
12.5 
7.9 
27.7 
TABLE XIX—MONTHLY MEAN RELATIVE HUMIDITY }£(7A + 7P) 
IN PER CENT OF SATURATION 
At the Colorado Experiment Station, Fort Collins, Colorado. 
Date. 
Jan. 
Feb. 
Mar. 
Apr. 
May 
! 
June 
July 
1 
Aug. | Sept. 
1 
o 
o 
Nov. 
| Dec. 
Yr. 
1887 . 
56.6 
65.8 
44.4 
51.4 
70.0 
79.9 
69.0 
57.7 
59.3 
70.0 
62.7 
55.4 
61.8 
1888. 
44.6 
61.5 
59.7 
62.6 
62.2 
52.5 
55.8 
60.2 
59.7 
56.2 
71.2 
60.5 
58.9 
1889. 
65.6 
66.6 
63.6 
58.9 
62.8 
63. 9 
64.3 
60.8 
53.1 
64.5 
78.9 
64.4 
63.9 
1890 . 
75.4 
68.0 
52.9 
63.5 
59.1 
51.4 
61.8 
69.0 
52.9 
60.7 
70.0 
65.4 
62.5 
1891. 
89.3 
78.3 
82.5 
58.8 
68.9 
69.9 
69.2 
68.1 
66.6 
53.6 
64.2 
69.7 
69.9 
1892 . 
80.0 
82.6 
73.2 
56.2 
69.1 
66.2 
67.4 
58.9 
51.6 
66.1 
61.3 
78.1 
67.6 
1893 . 
56.1 
64.7 
60.7 
51.0 
57.5 
51.9 
56.3 
62.0 
51.4 
51.7 
62.6 
67.1 
57.7 
1894 . 
63.8 
70.6 
56.6 
48.1 
55.5 
54.8 
60.6 
63.2 
61.0 
50.5 
62.2 
76.7 
60.3 
1895. 
75.7 
76.4 
64.3 
47.3 
59.0 
67.7 
71.0 
68.3 
57.6 
64.2 
68.0 
65.3 
65.4 
1896. 
62.1 
58.6 
69.7 
54.6 
46.6 
52.6 
67.7 
62.8 
76.1 
65.7 
65.1 
67.2 
63.2 
1897 . 
68.4 
74.7 
72.6 
61.0 
63.0 
69.0 
68.0 
73.0 
69.2 
71.1 
75.0 
75.1 
70.0 
1898. 
75.2 
67.5 
62.6 
52.4 
71.4 
62.7 
60.9 
59.0 
60.1 
55.6 
72.4 
73.6 
64.4 
1899. 
70.2 
87.2 
73.7 
53.2 
53.2 
54 5 
70.8 
63.1 
60.8 
72.7 
69.2 
74.1 
66.9 
1900 . 
73.3 
76.4 
70.6 
78.8 
62.6 
60.5 
64.5 
57.8 
67.6 
61.9 
61.0 
61.0 
66.3 
1901. 
66.0 
78.9 
62.9 
65.4 
62.6 
64.0 
62.6 
67.7 
64.1 
66.7 
64.9 
76.4 
66.9 
1902. 
78.2 
70.8 
61.8 
58.8 
61.2 
62.0 
65.1 
60.1 
64.5 
74.4 
72.4 
75.0 
67.0 
1903. 
73.0 
86.0 
83.6 
60.2 
61.5 
74.5 
65.9 
69.3 
70.8 
66.0 
78.7 
61.5 
70.9 
1904 . 
65.5 
59.5 
60.3 
53.5 
64.9 
70.5 
70.1 
69.3 
73.2 
74.0 
60.2 
73.6 
66.2 
1905. 
85.5 
85.S 
71.1 
74.0 
70.0 
69.0 
68.6 
69.7 
67.7 
73.0 
72.0 
66.3 
72.7 
1906. 
60.0 
63.3 
81.5 
61.0 
60.7 
63.7 
70.1 
70.2 
79.3 
71.2 
80.6 
74.2 
69.6 
1907 . 
79.2 
66.8 
54.9 
61.8 
68.8 
58.4 
71.0 
67.4 
67.5 
75.1 
76.0 
68.3 
67.9 
1908 . 
63.4 
62.8 
51.3 
42.4 
59.2 
60.0 
69.7 
77.4 
66.8 
68.0 
77.9 
81.2 
65.0 
1909. 
75.8 
70.6 
78.3 
60.1 
51.9 
68.0 
71.7 
71.2 
7S.2 
58.1 
73.7 
79.2 
69.7 
1910. 
70.0 
62.8 
41.0 
37.6 
62.5 
56.9 
56.7 
64.8 
69.3 
63.7 
71.8 
68.8 
60.5 
1911. 
66.2 
71.5 
55.5 
52.4 
52.8 
55.7 
1 
63.8 
60.4 
58.7 
64.9 
65.7 
75.6 
61.9 
Average. . . j 
69.6 
71.1 
64.4 
57.0 
61.5 
62.8 
65.7 
65.3 
64.3 
64.8 
69.5 
70.1 
65.5 
Maximum.. 
1 89.3 
87.2 
83.6 
78.8 
71.4 
79.9 
71.7 
77.4 
79.3 
75.1 
80.6 
81.2 
72.7 
Minimum. . 
! 44.6 
58.6 
41.0 
37.6 
46.6 
51.4 
55.8 
57.7 
51.4 
50.5 
60.2 
55.4 
57.7 
