P    #regions in PPM
# 2012-04-20 13:26:47 -0500  mfjofre@watusi.nmrfam.wisc.edu
# low field   high field   mi   maxi
  1000.0  222.33581  0.000  1000000.000  # for region 1
  222.3358  -16.6113  5.000  1000000.000  # for region 2