Meteorological Observations. 



m 



Abstract of the Results of the Hourly Meteorological Observations 



taken at the Surveyor General's Office, Calcutta, 



in the month of January 1870. 



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



dependent thereon. 



Hour 



Mean Height of 



the Barometer at 



32° Faht. 



.Range of the Barometer 



for each hour duriug 



the month. 



Max. 



Min. 



Diff. 



£ ° 



» 



Bange 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 

 6 

 6 

 7 

 8 

 9 

 10 

 11 



Inches. 



29.994 

 .961 

 .931 

 .913 

 .908 

 .911 

 .918 

 .931 

 .948 

 .961 

 .967 

 .961 



Inches. 



29.957 



30.031 



.952 



.034 



.946 



.031 



.940 



.031 



.936 



.021 



.945 



.013 



.962 



.037 



.981 



.061 



30.009 



.093 



.035 



.114 



.041 



.127 



.023 



.107 



.072 

 .036 

 .002 



29.987 

 .975 

 .980 

 .991 



30.005 

 .022 

 .033 

 .038 

 .026 



Inches. 



29.872 

 .872 

 .872 

 .870 

 .868 

 .874 

 .878 

 .894 

 .915 

 .940 

 .954 

 .922 



.896 

 .865 

 .837 

 .820 

 .808 

 .813 

 .818 

 .838 

 .848 

 .873 

 .879 

 .874 



Inches. 



0.159 

 .162 

 .159 

 .161 

 .153 

 .139 

 .159 

 .167 

 .178 

 .174 

 .173 

 .185 



.176 

 .171 

 .165 

 .167 

 .167 

 .167 

 .173 

 .167 

 .174 

 .160 

 .159 

 .152 



63.9 

 63.3 

 62-6 

 61.9 

 61.3 

 60.7 

 60.3 

 60.1 

 62.0 

 65.5 

 69.6 

 72.7 



74.6 

 76.3 

 77.3 

 77.8 

 76.5 

 75.0 

 72.3 

 69.9 

 68.2 

 66.7 

 65.7 

 64.8 



72.6 

 72.3 

 72.0 

 71.6 

 71.0 

 70.3 

 70.4 

 70.5 

 71.0 

 72.0 

 76.3 

 79.0 



80.2 

 81.5 

 82.5 

 83.2 

 82.3 

 81.2 

 80.2 

 78.5 

 77.5 

 76.5 

 73.7 

 73.0 



59.0 

 58.5 

 58.0 

 57.5 

 57.0 

 56.3 

 55.7 

 55.4 

 57.5 

 61.1 

 65.2 

 68.0 



69.5 

 70.5 

 70.5 

 71.0 

 71.5 

 70-5 

 68.5 

 66.0 

 64.0 

 62.8 

 61.0 

 59.7 



13.6 

 13 8 

 14.0 

 14.1 

 14.0 

 14.0 

 14.7 

 15.1 

 13.5 

 10.9 

 11.1 

 11.0 



10.7 

 11.0 

 12.0 

 12.2 

 10.8 

 10.7 

 11.7 

 12.5 

 13.5 

 13.7 

 12.7 

 13.3 



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. 



