P    #regions in PPM
# 2023-12-12 16:01:56 +0000  amg@AVANCE500
# low field   high field   mi   maxi
  4.6568  4.6347  0.000  10000.000  # for region 1
  4.1209  4.1039  0.000  10000.000  # for region 2
  0.0833  -0.0434  0.000  10000.000  # for region 3
