P    #regions in PPM
# 2018-09-19 14:44:31 -0500  bmrbmb@tonga.nmrfam.wisc.edu
# low field   high field   mi   maxi
  1000.0  8.194720805341865  0.000  1000000.000  # for region 1
  8.194720805341865  0.6171332952171034  0.321  16.713  # for region 2
  0.6171332952171034  0.1  0.000  1000000.000  # for region 3
