P    #regions in PPM
# 2012-04-25 09:47:12 -0500  mfjofre@watusi.nmrfam.wisc.edu
# low field   high field   mi   maxi
  1000.0  222.33521  0.000  1000000.000  # for region 1
  222.3352  -16.6119  0.000  1000000.000  # for region 2