P    #regions in PPM
# 2018-05-30 14:09:07 -0500  bmrbmb@tonga.nmrfam.wisc.edu
# low field   high field   mi   maxi
  1000.0  144.94904439059513  0.000  1000000.000  # for region 1
  144.94904439059513  5.166500592140025  -14.723  21.425  # for region 2
  5.166500592140025  0.1  0.000  1000000.000  # for region 3
