P    #regions in PPM
# 2023-12-12 10:38:17 +0000  amg@AVANCE500
# low field   high field   mi   maxi
  4.658  4.6318  0.000  10000.000  # for region 1
  4.1229  4.1168  0.000  10000.000  # for region 2
  4.1168  4.1032  0.000  10000.000  # for region 3
  0.0179  -0.0119  0.000  10000.000  # for region 4
