Meteorological Observations 



-\:x\ 



Abstract of the Res/fits of the Hourly Meteorological Observations 



taken at the Surveyor General's Office, Calcutta, 



in the month of December 187 5. 



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



dependent thereon. 



Hour 



, — i i.. *^> 



\fr 





JRange of the Barometer 



for each hour during 



the month. 



Max. 



Min. 



Diff. 



r3 



Range of the Tempera- 

 ture for each hour 

 during the month. 



Max. 



Min. 



Diff, 



Mid- 

 night 

 1 

 2 



3 



4 



5 



6 



7 



8 



9 

 10 

 11 



Noon 



1 



2 



3 



4 



5 



6 



7 



8 



9 

 10 

 11 



filches. 



30.032 



.0-2:) 



.01 I 



.004 

 .002 

 .014 



.030 

 .( >p< I 

 .074 

 .098 



.100 

 .081 



.050 

 .017 



29.990 

 .97.6 

 .1)70 

 .976 

 .990 



30.000 

 .022 

 .03.6 

 .013 

 .038 



Inch 



30.123 

 .113 

 .107 

 .101 

 .115 

 .125 

 .138 

 .148 

 .172 

 .197 

 .195 

 .175 



.138 

 .10(5 

 .079 

 .065 

 .060 

 .071 

 .077 

 .098 

 .119 

 .13(3 

 .129 

 .131 



Inch 



29.916 

 .906 

 .901 

 .893 

 .895 

 .910 

 .923 

 .936 

 .963 

 .985 

 .964 

 .946 



.921 

 .906 

 .892 

 .862 

 .862 

 .863 

 .87 1 

 .886 

 .902 

 .916 

 .925 

 .920 



fm-li 



(I 



.207 

 .207 

 .206 

 .208 

 220 

 215 

 215 

 212 

 209 

 212 

 231 

 229 



.217 

 .200 

 .187 

 .203 

 .198 

 .208 

 .203 

 .212 

 .217 

 .220 

 .204 

 .211 



on. 7 



66.1 

 65. 1 



64.8 

 01.2 

 63.7 

 63.2 



02.9 

 01,0 

 (IS. I. 



71.8 

 64.6 



70.3 

 77.5 

 78.1 

 78.3 

 76.9 

 75.4 

 73.o 

 71.3 

 70.0 

 68.8 

 67.8 

 67.1 



73. 1. 

 73.2 



72.7 

 72.0 

 71.8 

 71.0 

 7o. s 

 70.4 

 71.0 

 73.5 

 77.5 

 81 > 5 



81.2 

 82.5 

 82.7 

 82.5 

 si.:; 

 79.5 

 78.0 

 70.7 

 76.0 

 755 

 71,5 

 74.0 



60.0 

 58 8 

 58.0 

 57.5 

 57.0 

 56.0 

 55.5 

 55.5 

 56 5 

 61.2 

 64.3 

 66.3 



08.3 

 70.0 

 70.3 

 715 

 70.0 

 69.0 

 66. L 

 65.0 

 03.5 

 02.5 

 61.5 

 GO. 5 



13 1 

 1 l. I 

 14.7 

 1 1,5 

 1 L8 

 15.0 

 15 3 

 1 1.9 

 1 15 

 12.3 

 13.2 

 1 L.2 



12.9 

 12.5 



12.4 



llo 



11.3 



10.5 

 11.6 

 11.7 



12.5 

 13.0 

 13.0 

 1 3 5 



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

 Thermometer Means are derived from the observations made at the several 

 hours during the month. 



