P    #regions in PPM
# 2012-08-21 11:50:44 -0500  mfjofre@watusi.nmrfam.wisc.edu
# low field   high field   mi   maxi
  1000.0  217.82411  0.000  1000000.000  # for region 1
  217.8241  -18.9736  5.000  1000000.000  # for region 2