P    #regions in PPM
# 2012-05-10 12:34:28 -0500  mfjofre@watusi.nmrfam.wisc.edu
# low field   high field   mi   maxi
  1000.0  218.39991  0.000  1000000.000  # for region 1
  218.3999  -18.3979  5.000  1000000.000  # for region 2