ABSTRACT FOR THE MONTH OF APRIL, 1902 



Meteorological Observations, McGill College Observatory, Montreal, Canada. Height above sea level, 187 feet. C. H. McLEOD, SuperintmdenL 



iSYcusn 

 for «nd incli 

 this month . 



THERMOMETER. 



Max. Min. 



37-; 



32.7 



S-O 



44-7 





10.9 



42. S 



31. 1 



II. 7 









46.7 



29-9 





■i».8 



3I-4 



21.4 



56.8 



32.9 



23.9 









43 •» 



36.2 







33 7 



5-3 





33-5 



9.7 



4=-7 



33> 



9.6 



47.0 



36.0 



11 .0 



47.0 



32.0 



15-0 





35.9 



21.9 



,6.8 



35.7 



21. 1 



5S-0 



4'.S 



13-5 







13-9 



60.0 



36.0 



24.0 



5S-° 



43-7 



11.3 





39 3 



■0.3 



50.0 



38.5 



11.5 







34.7 



4"-^ 



36-4 





53.6 



34.'> 





* BAROMETER. 



29.96 

 29 83 

 29.84 

 29.77 



Min. Range. 



29.19 

 29 19 

 29-54 



•4 



29.99 

 29.89 





29.83 

 29.86 





3003 



29.76 





29.79 





29.77 • 





29.62 





29.59 





29.97 





29.97 

 29-85 





29.89 





29.88 

 29.98 

 29.78 





29-59 



29.80 





30.07 

 29-38 



.' 



29.44 





29.90 

 29.96 

 29.82 





humid- 



N-E. 

 N.E- 

 N.E. 

 N.E. 



!7 Sunday 



28 Years means 

 for and including 







AMALYSIS OF WIND RECORD. 







Direction 



N- 



N.E. 



E. 



S.K. 



S. 



S.W. 



W. 



N.W- 



Calm- 



-Mile. 



358 



2334 



383 



1232 



434 



689 



4526 



10S6 





Duration in hrs.. 



33 



,20 



50 



1.0 



43 



47 



255 



59 



3 



Mean velocity.... 



10.8 



19.4 



7.7 



11.2 



.0.1 



.4.7 



17.7 



.8-4 





Greatest mileage in one hour t 

 Greatest velocity in gusts was 



i on the 23rd. 

 ithe9th A23rd 



Resultant mileage, 3,050- 

 Kesultant direotton, N. 71' W. 

 Total mileage, 11,040. 



•Barometer readings reduced 1 

 temperature 32° Fahrenheit. 



;ea-level and 



t Mean of bi-hourly readings taken from 

 self-recording instruments. 



X Humidity relative, saturation being 100. 



fin of observations at a, 15 and 20 hours. 



1121 years only. § 16 years only. 



The greatest heat wm 75.2° above zero on 

 the 29th: the greatest cold was 29.9° above zero 

 on theStb ; giving a ranae of tomperaiure of 45.3 . 

 Warmest day was the 29th. Coldest day was the 

 1st. 



Highest barometer reading was 30-26 on the 

 25th ; lowest barometer was 29.19 on the let and 

 2nd ; giving a range of 1.07 inohes- 



Minimum relative humidity observed was 26 

 on the 29th. 



Rain fell on 18 days. 



Snow fell on 3 days. 



Rain or snow fell on 18 days. 



Lunar halo on the 18th. 



Thunder and lightning on the 26th and 30th. 



