P    #regions in PPM
# 2012-08-26 10:44:37 -0500  mfjofre@watusi.nmrfam.wisc.edu
# low field   high field   mi   maxi
  1000.0  217.84621  0.000  1000000.000  # for region 1
  217.8462  -18.9515  5.000  1000000.000  # for region 2