326 



SMITHSONIAN MISCELLANEOUS COLLECTIONS 



VOL. 105 



MAZATLAN, MEXICO 



Lat. 23°12' N. Long. 106°25' W. H = 

 PRESSURE AT SEA LEVEL: COR. TO 0° C. 

 GRAV. AT 45° LAT. 



Means of K7" + 14''+2r'), 90th meridian W 

 700 mm. + 



78 m. 



(32° F.) AND TO 



TEMPERATURE IN DEGREES C. 

 Means of K7'' + 14-+21") 



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



TOTAL PRECIPITATION IN MILLIMETERS 



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



PRESSURE AT SEA LEVEL 

 1,000 mb. + 



* Normal value used for missing month, t Mean of 12 monthly means. J Sum of 12 monthly means. 



