MAY 



JUNE 



JULY 



AUG 



SEPT 



OCT 



Figure 1. — Solar radiation at the station on the southwest exposure at 7,100 feet 



elevation: 5-year average of weekly means of daily totals; the range of weekly 

 means over 5 years; and weekly means of daily maximum intensity . 



Table 2 . --Average"^ daily solar radiation at the station on the 

 southwest exposure at the 7 , 100-foot elevation 



Year 



May \ 



June 





Aug. 



Sept . 



[ Oct. 









Cal./am. 



^/day- - 







1964 



391 



396 



516 



416 



351 



260 



1965 



430 



449 



518 



435 



276 



295 



1966 



488 



451 



531 



454 



356 



240 



1967 



480 



411 



502 



496 



373 



241 



1968 



415 



401 



535 



387 



310 



237 



5-year mean: 



444 



423 



520 



438 



333 



255 



^Standard deviation for monthly means averaged 115 cal . /cm . ^/day. 



5 



