Meteorological Observations. 
xxxv 
Abstract of the Results of the Hourly Meteorological Observations 
talcen at the Surveyor General’s Office, Calcutta, 
in the month of September, 1860. 
Hourly Means, Sec. of the Observations and of the Ilygrometrical elements 
dependent thereon. 
Hour. 
Mean Height of 
the Barometer 
at 32° Faht. 
Range of the Barometer 
for each hour during 
the month. 
Mean Dry Bulb 
Thermometer. 
Range of the Temperature 
for each hour during 
the month. 
Max. 
Min. 
Diff. 
Max. 
Min. 
Diff. 
Inches. 
Inches. 
Inches. 
Inches. 
Q 
0 
0 
0 
Mid- 
night. 
29.683 
29.740 
29.543 
0.197 
81.7 
84.6 
78.0 
6.6 
1 
.666 
.724 
.454 
.270 
81.4 
84.2 
77.8 
6.4 
2 
.656 
.718 
.442 
.276 
81.2 
84.7 
77.4 
7.3 
3 
.648 
.715 
.427 
.288 
80.9 
84.4 
77.2 
7.2 
4 
.647 
.711 
.417 
.294 
80.7 
84.0 
77.2 
6.8 
5 
.653 
.724 
.442 
.282 
80.7 
83.8 
77.6 
6.2 
6 
.671 
.750 
.444 
.306 
80.6 
83.6 
77.2 
6.4 
7 
.690 
.764 
.464 
.300 
81.3 
84.2 
77.8 
6.4 
8 
.710 
.790 
.513 
.277 
83.1 
85.6 
79.8 
5.8 
9 
.722 
.794 
.516 
.278 
84.4 
87.2 
80.0 
7.2 
10 
.723 
.796 
.523 
.273 
85.5 
88.2 
81.0 
7.2 
11 
.712 
.780 
.530 
.250 
86.3 
89.6 
81.0 
8.6 
Noon. 
.691 
.761 
.513 
.248 
86.9 
89.6 
81.8 
7.8 
1 
.664 
.743 
.497 
.246 
87.0 
91.0 
81.6 
9.4 
2 
.641 
.725 
.467 
.258 
86.9 
91.2 
81.2 
10.0 
3 
.619 
.720 
.444 
.276 
86.1 
91.2 
80.6 
10.6 
4 
.610 
.700 
.450 
.250 
85.5 
91.0 
80.0 
11.0 
5 
.613 
.705 
.443 
.262 
84.6 
89.8 
79.8 
10.0 
6 
.626 
.709 
.450 
.259 
83.6 
86.5 
79.6 
6.9 
7 
.644 
.728 
.461 
.267 
83.0 
86.4 
79.4 
7.0 
8 
.668 
.746 
.488 
.258 
82.6 
85.8 
79.6 
6.2 
9 
.685 
.746 
.499 
.247 
82.4 
85.0 
79.6 
5.4 
10 
.687 
.752 
.521 
.231 
82.0 
84.6 
78.8 
5.8 
11 
.683 
.761 
.502 
.259 
81.8 
84.2 
78.2 
6.0 
The Mean Height of the Barometer, as likewise the Mean Dry and Wet Bulb 
Thermometers are derived from the observations made at the several hours 
during the month. 
