P    #regions in PPM
# 2012-05-11 11:37:10 -0500  mfjofre@watusi.nmrfam.wisc.edu
# low field   high field   mi   maxi
  1000.0  218.38111  0.000  1000000.000  # for region 1
  218.3811  -18.4167  3.000  1000000.000  # for region 2