XXX11 



Meteor ohg leal Observaion sv 



Abstract of the Besults of the Hourly Meteorological Observations 

 taken at the Surveyor General's Office, Calcutta, 

 in the month of April 1883. 

 Monthly Results*. 



Inches. 



Mean height of the Barometer for the month.,. - ... ... 29.// 4 



Max. height of the Barometer occurred at 10 a. m. on the lat, . .. jW.Ulb- 

 Min. height of the Barometer occurred at 4 p. m. on the 22nd, . . . 29.o69 

 Extreme range of the Barometer during the month ... ... J*™ 



Mean of the daily Max. Pressures faJSk 



Ditto ditto Min. ditto ... ... 29.69& 



Mean daily range of the Barometer during the month ... ... U.15U* 



Mean Dry Bulb Thermometer for the month ... 83 . 1 



Max. Temperature occurred at 2 p. m. on the 30th, ... ... 98.5 



Min. Temperature occurred at Midnight & 11 p. m. on the 5th & 6th. 57.5 



Extreme range of the Temperature during the month ... .... «*1.(> 



Mean of the daily Max. Temperature... ... J*-* 



Ditto ditto Min. ditto, ... ... '&•» 



Mean daily range of the Temperature during the month... ... 10.4. 



Mean Wet Bulb Thermometer for the month ... ... ... '6.7 



Mean Dry Bulb Thermometer above Mean Wet Bulb Thermometer b.4 

 Computed Mean Dew-point for the month ... ... ••■ \ 1 '* 



Mean Dry Bulb Thermometer above computed mean Dew-point ... lU.tf 



Inches. 



Mean Elastic force of Yapour for the month ... ... ... 0.781 



Troy grain. 



Mean Weight of Vapour for the month ... ... ••• 8.36 



Additional Weight of Vapour required for complete saturation ... d.5U 

 Mean degree of humidity for the month, complete saturation being unity 0./ 1 



Inches. 



Rained 9 days,— Max. fall of rain during 24 hours 2.47 



Total amount of rain during the month ... ... ••• °- 4/ 



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



meter during the month ... ■■■ ••• "' 



Prevailing direction of the Wind b. & b. &• >Y . 



