Me teoro log ical Obset va tion s . 



Abstract of the Results of the Hourly Meteorological Observations 



taken at the Surveyor General's Office, Calcutta, 



in the month of April 1869. 



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

 dependent thereon. 





o rf 



Eange 



of the Barometer 





Eange o 



■ the Tempera- 





3 * ■ 



for each hour during 



ture for each hour 





go 



the month 





£>a 



during 



the month. 



Hour. 









P I 





| 





§W to 



Max. 



Min. 



Diff. 



il 



Max. 



j Min. Diff. 





s§| 









£* 





1 





Inches. 



Inches. 



Inches. 



Inches. 



o 



° 



o 



o 



Mid- 



















night. 



29.764 



29.900 



29.664 



0.236 



82.4 



84.2 



77.0 7.2 



1 



.753 



.890 



.653 



.237 



81.8 



84.0 



76.0 



80 



2 



.743 



.883 



.646 



.237 



81.3 



83.6 



75.5 



8.1 



3 



.734 



.871 



.640 



.231 



80.9 



83.6 



75.0 



8.6 



4 



.934 



.874 



.639 



.235 



80.5 



83.5 



75.6 



7.9 



5 



.749 



.889 



.656 



.233 



80.3 



83.5 



75.6 



7.9 



6 



.769 



.904 



.681 



.223 



80.2 



84.0 



76.6 



7.4 



7 



.793 



.932 



.697 



.235 



81.1 



84.5 



77.5 



7.0 



8 



.814 



.950 



.717 



.233 



83.4 



86.6 



79.5 



7.1 



9 



.827 



.968 



.726 



.242 



86.0 



88.5 



79.0 



9.5 



10 



.828 



.967 



.734 



.233 



88.5 



91.0 



82.0 | 9.0 



11 



.819 



.958 



.721 



.237 



90.9 



93 6 



85.4 ! 8.2 



Noon. 



.797 



.932 



.704 



.228 



92.5 



95.8 



88.2 7.6 



1 



.768 



.910 



.669 



.241 



93.8 



97.7 



90.4 



7.3 



2 



.737 



.872 



.645 



.227 



94.6 



99.4 



91.0 



8.4 



3 



.709 



.857 



.617 



.240 



94.8 



99.5 



90.4 



9.1 



4 



.693 



.842 



.592 



.250 



94.2 



99.5 



88.8 



10.7 



5 



.686 



.839 



.530 



.309 



92.7 



99.0 



86.7 



12.3 



6 



.691 



.821 



.534 



.287 



90.3 



97.4 



85.5 



11.9 



7 



.713 



.830 



.588 



.242 



87.6 



92.5 



84.4 



8.1 



8 



.734 



.837 



.620 



.217 



86.0 



91.0 



83.7 7.3 



9 



.755 



.862 



.631 



.231 



84.8 



88.5 



82.7 | 6.8 



10 



.770 



.871 



.645 



.226 



83.7 



87.0 



79.0 ! 8.0 



11 



.768 



.864 



.645 



.219 



83.1 



85.6 



76.5 9.1 



j 



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. 



