P    #regions in PPM
# 2011-04-20 11:32:26 -0500  mfjofre@watusi.nmrfam.wisc.edu
# low field   high field   mi   maxi
  5.365556329682873  5.061096307686065  0.771  4.665  # for region 1
  4.80517339064527  4.355102053780424  2.094  12.783  # for region 2
  4.138891313521821  3.0887248608371802  0.624  15.465  # for region 3