WHOLE VOL. 



NORTH AMERICA 



327 



MERIDA, MEXICO 



Lat. 20''58' N. Long. 89°37' W. Hb = 22 m. 



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



GRAV. AT 45° LAT. 



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



700 mm. + 



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



TEMPERATURE IN DEGREES C. 



Means of M7" + 14"+21") 



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



24.8 27.0 27.4 



26.1 26.9 27.4 



28.6 28.3 27.3 



26.5 26.8 26.5 



27.5 29.7 28.9 



26.5 27.0 27.3 



26.5 27.2 27.3 

 26.8 28.1 26.7 



26.6 27.0 27.0 

 26.8 27.1 27.8 



26.7 27.5 27.4 



27.7 27.4 27.1 

 27.4 27.9 28.2 

 27.4 27.2 26.8 

 26.9 27.1 26.9 



27.1 26.9 27.6 

 26.9 27.3 26.9 

 26.6 27.2 26.9 



26.8 26.9 26.5 



27.2 27.0 26.3 

 27.1 27.7 27.1 

 27.1 27.3 27.0 



TOTAL PRECIPITATION IN MILLIMETERS 



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



8.6 20.2 844.3 

 56.0 15.8 969.3 



0.5 103.6 974.3 



20.2 18.2 860.3 



25.4 10.0 679.8 

 60.0 45.0 1083.9 



6.7 3.7 789.6 



56.0 2.2 909.5 



34.1 3.4 811.9 

 17.1 96.4 847.1 



28.5 31.8 876.0 



PRESSURE AT SEA LEVEL 

 1,000 mb. + 



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



15.8 15.3 14.4 

 17.1 16.9 13.9 

 17.6 18.4 13.7 



15.5 18.0 15.0 



16.6 17.2 14.6 



16.7 17.1 13.8 



15.9 17.1 14.3 

 16.0 17.7 16.2 

 17.9 17.1 15.1 

 16.4 14.9 14.3 

 16.6 17.0 14.4 



