TABLE 6 



STATISTICS OF DIFFERENCES IN DEPTH (IN FEET) OF 

 15.5° ISOTHERMS FOR LAGS OF DIFFERENT INTERVALS 



Standard Extreme 

 Lags N Mean Deviations Differences 



50-second 



Saries: 



50" 9078 0.81 1.13 20 



100" 9035 1.52 1.74 30 



150" 8996 2.13 2.21 28 



S.OO" 8960 2.65 2.57 19 



250" 8927 3.09 2.89 28 



300" 8895 3.45 3.12 29 



350" 8863 3.74 3.30 31 



6 -minute 

 series: 



6' 4718 3.93 3.48 31 



12' 4689 5.03 4.22 38 



18' 4662 6.12 5.03 40 



24' 4642 6.94 5.65 42 



30' 4620 7.64 6.17 49 



36' 4603 8.22 6.62 43 



42' 4589 8.76 6.99 45 



48' 4576 9.32 7.32 46 



54' 4563 9.76 7.64 48 



60' 4554 10.15 7.93 49 



428 



