Meteorological Observations. 



xxvn 



Abstract of the Results of the Hourly Meteorological Observations 



taken at the Surveyor General 's Office, Calcutta, 



in the month of April 1866. 



Hourly Means, &c. of the Observations and of the Hygrometrical elements 



dependent thereon. 





o «s 



.Range of the Barometer 



jQ 



Range of the Tempera- 





hjC CD 5 



for eac 



•h hour during 



pS -S 



ture for each hour 





the month. 







during the month. 





w^ - 









>>3 





Hour. 









Si 













Max. 



Min. 



Diff. 





Max. 



Min. 



Diff. 













^ 











Inches. 



Inches. 



i 



Inches. 



Inches. 







o 



o 







Mid- 



















night- 



29.783 



30.042 



29.623 



0.419 



79.5 



83.4 



68.8 



14.6 



1 



.771 



29.963 



.608 



.355 



79.0 



83.0 



68.4 



14.6 



2 



.761 



.982 



.593 



.389 



78.8 



82.6 



68.8 



13.8 



3 



.752 



.959 



.580 



.379 



78.5 



82.2 



68.4 



13.8 



4 



.755 



.960 



.587 



.373 



78.2 



82.0 



69.0 



13.0 



5 



.770 



.982 



.600 



.382 



78.0 



82.2 



69.0 



13.2 



6 



.790 



30.005 



.620 



.385 



77.8 



82.2 



68.6 



13.6 



7 



.811 



.038 



.640 



.398 



78.8 



83.4 



70.4 



13.0 



8 



.833 



.068 



.665 



.403 



81.2 



85.8 



70.7 



15.1 



9 



.849 



.074 



.684 



.390 



84,3 



88.8 



73.3 



15.5 



10 



.851 



.070 



.685 



.385 



86.9 



92.2 



75.0 



17.2 



11 



.841 



.014 



.683 



.331 



89.1 



95.6 



76.3 



19.3 



Noon. 



.822 



.007 



.662 



.345 



90.6 



98.9 



77.6 



21.3 



1 



.791 



29.971 



.627 



.344 



91.9 



100.2 



78.0 



22.2 



2 



.757 



.947 



.585 



.362 



92.7 



101.8 



82.0 



19.8 



3 



.729 



.918 



.565 



.353 



93.0 



102.3 



82.8 



19.5 



4 



.709 



.899 



.555 



.344 



92.4 



102.6 



81.0 



21.6 



5 



.705 



.905 



.545 



.360 



90.6 



100.8 



79.0 



21.8 



6 



.727 



.917 



.557 



.360 



87.7 



96.4 



77.2 



19.2 



7 



.741 



.948 



.577 



.371 



84.7 



91.6 



72.8 



18.8 



8 



.768 



.963 



.605 



.358 



82.6 



89.8 



73.6 



16.2 



9 



.783 



.989 



.632 



.357 



81.6 



87.0 



73.4 



13.6 



10 



.796 



30.016 



.641 



.375 



80.6 



85.0 



72.2 



12.8 



11 



.795 



.062 



.639 



.423 



80.0 



84.4 



73.3 



11.1 



The Mean Height of the Barometer, as likewise the Dry and Wet Bulb 

 Thermometer Means are derived from the observations made at the several 

 hours during the month. 



