Meteorological Observations lxxx 



Abstract of the Results of the Hourly Meteorological Observations 



taken at the Surveyor General's Office, Calcutta, 



in the month of October 1875. 



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



dependent thereon. 



Hour 



o * 



"!h & • 



•s s£ 



Range of the Barometer 



for each hour during 



the month. 



Max. 



Min. 



Diff. 



^ 









2 



^ 



pq 



4P 





<u 



^, 



a 



p a 



rt 



f-l 



c« 



rC] 



£ 



=H 



Range of the Tempera- 

 ture for each hour 

 during the month. 



Max. 



Min. 



Diff. 



Mid- 

 night. 



1 



2 



3 



4 



6 



6 



7 



8 



9 

 10 

 11 



Noon 

 1 

 2 

 3 

 4 

 5 

 6 

 7 



9 



10 

 11 



Inches. 



29.832 



.822 

 .814 

 .807 

 .807 

 .820 

 .837 

 .857 

 .879 

 .891 

 .890 

 .875 



.849 

 .825 

 .801 

 .785 

 .781 

 .785 

 .795 

 .810 

 .831 

 .844 

 .850 

 .844 



Inches. 



29.914 

 .910 

 .906 

 .893 

 .897 

 .906 

 .925 

 .951 

 .972 

 .975 

 .976 

 .958 



.932 

 .910 



.878 

 .869 

 .864 

 .877 

 .890 

 .898 

 .907 

 .927 

 .934 

 .922 



Inches. 



29.685 

 .677 

 .670 

 .660 

 .646 

 .662 

 .682 

 .699 

 .724 

 .729 

 .729 

 .721 



.705 

 .679 

 .665 

 .641 

 .637 

 .639 

 .660 

 .671 

 .694 

 .702 

 .708 

 .714 



Inches. 



0.229 

 .233 

 .236 

 .233 

 .251 

 .244 

 .243 

 .252 

 .248 

 .246 

 .247 

 .237 



.227 

 .231 

 .213 



.228 

 .227 

 .238 

 .230 

 .227 

 .213 

 .225 

 .226 

 .208 



79.0 

 78.6 

 78.2 

 77.8 

 77.4 

 77.1 

 76.8 

 77.3 

 79.4 

 81.9 

 83.6 

 84.8 



85.3 

 86.0 

 86.1 

 86.1 

 85.6 

 84.6 

 82.8 

 81.7 

 80.9 

 80.3 

 79.8 

 79.2 



84.0 

 83.5 

 82.8 

 82.6 

 82.6 

 82.5 

 82.2 

 83.2 

 85.5 

 87.5 

 89.2 

 90.5 



91.5 

 91.2 

 91.3 

 91.8 

 91.5 

 90.5 

 88.0 

 87.0 

 86.0 

 85.5 

 85.0 

 84-4 



74.1 



74.0 

 73.8 

 73.6 

 73.5 

 73.2 

 73.0 

 73.0 

 73.5 

 73'.7 

 74.8 

 75.1 



75.0 

 75.0 

 74.7 

 74.7 

 74.7 

 74.5 

 74.0 

 73.8 

 74.0 

 73.9 

 73.8 

 73.8 



9.9 



9.5 



9.0 



9.0 



9.1 



9.3 



9.2 



10.2 



12.0 



13.8 



14.4 



15.4 



16.5 

 16.2 

 16.6 

 17.1 

 16.8 

 16.0 

 14.0 

 13.2 

 12.0 

 11.6 

 11.2 

 10.6 



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. 



