54«W 



53' 



52' 



5r 



50* 



49* 



50* 



49" 



48* 



47* 



48*»W 

 5I'N 



\ 1000 m 

 500m' 



- Rno 



JULY 



46*N 



54*'W 53* 



52* 



5r 



50* 



49* 



46*»N 

 48*'W 



KiGiiiK .")1. Field of standard deviation of dynamic lieifxht of tiie individual surveys from the Jul}' 



normal. Contour level is 1 dvnamie centimeter. 



67 



