P    #regions in PPM
# 2023-12-13 08:54:03 +0000  amg@AVANCE500
# low field   high field   mi   maxi
  4.6618  4.6171  0.000  10000.000  # for region 1
  4.1217  4.1008  0.000  10000.000  # for region 2
  0.4553  -0.5312  0.000  10000.000  # for region 3
