P    #regions in PPM
# 2018-09-05 12:41:51 -0500  bmrbmb@tonga.nmrfam.wisc.edu
# low field   high field   mi   maxi
  1000.0  7.907217844307795  0.000  1000000.000  # for region 1
  7.907217844307795  0.922336026400254  0.146  17.054  # for region 2
  0.922336026400254  0.1  0.000  1000000.000  # for region 3
