Meteorological Observalons. xlviii 



Abstract of the Results of the Hourly Meteorological Observations 



taken at the Surveyor General's Office, Calcutta, 



in the month of June 18G9. 



Monthly Results. 



Mean height of the Barometer for the month... 

 Max. height of the Barometer occurred at 10 a. m. on the 

 Min. height of the Barometer occurred at 11 a. m. on the 

 Extreme range of the Barometer during the month 

 Mean of the dai]y Max. Pressures 

 Ditto ditto Min. ditto 

 Mean daily range of the Barometer during the month .. 





Inches. 





... 29.516 



1st. 



... 29.729 



9th. 



... 28.713 





... 1.016 



, 



... 29.581 





... 29.441 





... 0.140 



Mean Dry Bulb Thermometer for the month ... 86.3 



Max. Temperature occurred at 3 &4 p. m. on the 5th 98.0 



Min. Temperature occurred at 10 & 11 a. m, on the 9th. & 28th. 77.5 



Extreme range of the Temperature during the month ... ... 20.5 



Mean of the daily Max. Temperature .. . ... 91.9 



Ditto ditto Min. ditto, ... ... 82.2 



Mean daily range of the Temperature during the month... ... 9.7 



Mean Wet Bulb Thermometer for the month ... ... ... 81.9 



Mean Dry Bulb Thermometer above Mean Wet Bulb Thermometer 4.4 



Computed Mean Dew-point for the month ... ... ... 78.8 



Mean Dry Bulb Thermometer above computed mean Dew-point ... 7.5 



Inches. 

 Mean Elastic force of Vapour for the month ... ... ... 0.964 



Troy grain. 



Mean Weight of Yapour for the month ... ... ... 10.27 



Additional Weight of Yapour required for complete saturation ... 2.75 

 Mean degree of humidity for the month, complete saturation being unity 0.79 



o 

 Mean Max. Solar radiation Thermometer for 6 days (broken) ... 134.2 



Inches. 



Rained 14 days,— Max. fall of rain during 24 hours ... ...10.99 



Total amount of rain during the month ... ... ... IS. 38 



Total amount of rain indicated by the Gauge attached to the anemo- 

 meter during the month ... ... ... ... ... 13. St) 



Prevailing direction of the Wind S.S.E, S. & S. by E. 



