Calibrations from doy 151, 1987 were used to calibrate:
   doy 151
   doy 152
   doy 153
   doy 154

Calibrations from doy 155, 1987 were used to calibrate:
   doy 155
   doy 159
   doy 160

There were changes between doy 159 and 160 in the east and west.

Cathy (6/15/95)