 SMC61250 4 level grid zlon zlat dlon dlat for size-1 cells.  JGLi28May2025
  0.0  0.0  0.087890625  0.058593750
  ../tmpfls/   ../DatGMC/               Working and cell array dirs.
  1  Number of polar cells or polar parts. 0 implies no Arctic part.
  ../../S61250Tx/ww3.    ../OutDat/   4    SWH and PropTest file dirs and nhr.

