P    #regions in PPM
# 2018-05-02 15:07:24 -0500  bmrbmb@tonga.nmrfam.wisc.edu
# low field   high field   mi   maxi
  1000.0  12.377698185046194  0.000  1000000.000  # for region 1
  12.377698185046194  2.0791423952903343  0.393  19.064  # for region 2
  2.0791423952903343  0.1  0.000  1000000.000  # for region 3
