LEGEND 

 X EXTREME 

 O MEAN 



[| +1 STANDARD DEVIATION 

 X 



"t 1 I I -r 1 1 r 1 1 1 1 1 — • — I 1 1 1- 



j p » n n J J fl s N j-n R-j j-s 0-D bo-83 



TIME 



ii 9 

 or 



a. 8- 



7 



6 



5- 

 4- 

 3- 



LEGEND 



O MEAN 

 n +1 STANDARD DEVIATION 



(fc ^ 



® (!!) i <S) ® 



^ <a 



d) * 



e ® 



J r n fi n j j r s o n d j-m r-j j-s o-d 80-83 



TtME 



b. T„ 



Figure B27. 1980 through 1983 mean, standard deviation, 

 and extreme H^^^ and T for gage 620 



B56 



