P    #regions in PPM
# 2012-07-26 11:00:22 -0500  mfjofre@watusi.nmrfam.wisc.edu
# low field   high field   mi   maxi
  1000.0  224.48471  0.000  1000000.000  # for region 1
  224.4847  222.23951  3.000  1000000.000  # for region 2
  222.2395  -16.7076  3.000  1000000.000  # for region 3