P    #regions in PPM
# 2012-09-21 10:21:23 -0500  mfjofre@watusi.nmrfam.wisc.edu
# low field   high field   mi   maxi
  1000.0  222.32641  0.000  1000000.000  # for region 1
  222.3264  -16.6207  3.000  1000000.000  # for region 2