4 3 12 15 20 2f| 28 32 36 40 m ^ 



'ffiro SFZSD (nph) 



Ut 37°i^8^ 

 Long I22''18'' 



i^'^i-'Jb: CVHRY ^ HOURS 



i-xby i]BSERVAT:a;s 



Figure 3. Wind rose for Alameda Island, Central San 



Francisco Bay (U.S. Army Engineer District, 

 San Francisco, 1978) . 



13 



