WHOLE VOL. NORTH AMERICA 78l 



LEON, MEXKK) 



Lat. 21° 7' N. Long. 101° 41' W. H,. = 1,809 m. 



PRESSURE AT STATION: COR. TO 0° C. AND TO GRAV. AT 45° LAT. 



Means of K7" + 14" + 21") 

 600 mm. + 



Date Jan. Feb. Mar. Apr. May June July Aug. Sept. Oct. Nov. Dec. Year 



M'ns 16.9 16.3 15.9 15.8 15.5 15.8 16.9 16.6 16.4 16.5 17.1 16.9 16.4 



