WHOLE VOL. 



NORTH AMERICA 



307 



LEON, MEXICO 



Lat. 21° 7' N. Long. 101° 41' W. H = 1809 m 



PRESSURE AT STATION LEVEL: COR. TO 0° C. (32° F.) AND TO 



GRAV. AT 45° LAT* 



Means of H7 h + 14 n + 21"), 90th meridian W. 



600 mm + 



17.0 16.6 15.8 15.8 15.6 15.6 17.4 17.5 16.3 16.8 17.4 17.2 fl6.6 



TEMPERATURE IN DEGREES C. 

 Means of 7 h , 14", and 21" 



14.5 16.3 19.1 21.5 23.0 22.0 20.1 20.3 19.8 18.5 16.6 15.3 U8.9 



TOTAL PRECIPITATION IN MILLIMETERS 



I'ns 3.8 3.2 4.7 1.0 22.7 120.3 160.2 



* A correction of — • 1.2 mm was applied for gravity. 

 f Mean of 12 monthly means. 

 t Sum of 12 monthly means. 



127.0 137.0 37.7 22.5 15.7 J655.8 



