P    #regions in PPM
# 2012-09-21 08:11:20 -0500  mfjofre@watusi.nmrfam.wisc.edu
# low field   high field   mi   maxi
  1000.0  222.32791  0.000  1000000.000  # for region 1
  222.3279  -16.6192  3.000  1000000.000  # for region 2