Gulf of California — Roden 
31 
TABLE 3 
Mean Monthly Evaporation 
E p = measured from pans, E c = computed 
LA PAZ (1938) 
GUAYMAS (1943) 
MAZATLAN (1938) 
Ep 
E c 
Ep 
Ec 
Ep 
E c 
mm. 
mm. 
mm. 
mm. 
mm. 
mm. 
January 
139 
76 
139 
174 
185 
172 
February 
120 
41 
206 
216 
213 
194 
March 
129 
81 
286 
269 
148 
129 
April 
119 
98 
351 
27 6 
205 
133 
May 
146 
127 
446 
337 
210 
163 
June 
166 
126 
420 
299 
211 
130 
July 
174 
172 
294 
280 
230 
123 
August 
197 
156 
246 
239 
289 
181 
September 
150 
82 
198 
266 
202 
190 
October 
159 
180 
162 
337 
210 
245 
November 
158 
98 
148 
178 
162 
196 
December 
154 
57 
92 
288 
140 
196 
Year 
1809 
1294 
2958 
3247 
2492 
2071 
(Ec/E p )year 
0.72 
(1.10) 
0.83 
