P    #regions in PPM
# 2012-04-23 10:10:07 -0500  mfjofre@watusi.nmrfam.wisc.edu
# low field   high field   mi   maxi
  1000.0  222.35271  0.000  1000000.000  # for region 1
  222.3527  -16.5944  5.000  1000000.000  # for region 2