Diff oht =  0.154400 (Y 850)
   Diff oht =  0.158300 (C 200)
   Diff oht =  5.726700 (NORM)
   Diff oht =  0.150900 (Y 852)
   Diff oht = 25.950300 (1122)
   Diff oht =  0.162300 (GLEN)
   Diff oht = 17.219500 (1118)
   Diff oht =  0.185400 (H 285 USGS)
   Diff oht =  0.151100 (Q 1078)
   Diff oht =  0.162100 (U 1078)
   Diff oht = -89.991900 (CREE)
   Diff oht =  0.245400 (W 215 AZ MK)
   Diff oht =  0.244500 (S 1067)
   Diff oht =  0.217500 (Y 380)
   Diff oht =  0.233800 (V 380 RESET 1967)
   Diff oht =  0.192800 (A 1079)
   Diff oht =  0.194100 (B 1079)
   Diff oht =  0.225100 (K 852)
   Diff oht =  0.122600 (ORLAND SOUTH BASE)
   Diff oht =  0.221400 (N 852)
   Diff oht =  0.127800 (HAMI)
   Diff oht =  0.226500 (WINSLOW)
   Diff oht =  0.201100 (P 1430)
   Diff oht =  0.178600 (J 1434)