P    #regions in PPM
# 2023-12-13 09:05:19 +0000  amg@AVANCE500
# low field   high field   mi   maxi
  4.6616  4.6176  0.000  10000.000  # for region 1
  4.1196  4.1006  0.000  10000.000  # for region 2
  0.3415  -0.6198  0.000  10000.000  # for region 3
