WHOLE VOL. 



NORTH AMERICA 



309 



MERIDA, MEXICO 



Lat. 20° 58' N. Long. 89° 38' W. H = 22 m 



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



GRAV. AT 45° LAT* 



Means of 4(7" + 14" + 21") , 90th meridian W. 



700 mm + 



Mns 63.1 62.1 60.5 59.6 58.8 59.2 61.2 60.6 58.8 59.1 61.9 62.5 



60.6 



TEMPERATURE IN DEGREES C. 

 Means of 7 h , 14 h , and 21" 



M'ns 22.8 23.8 25.7 27.4 28.1 27.9 27.4 27.5 27.1 26.1 24.2 23.4 26.0 



TOTAL PRECIPITATION IN MILLIMETERS 



!'ns 39.6 20.7 19.0 22.1 79.5 163.3 142.3 129.0 152.6 105.3 36.4 27.9 +937.7 



*A correction of — 1.5 mm was applied for gravity, 

 t Derived from observed value at Piogreso. 

 J Sum of 12 monthly means. 



