P    #regions in PPM
# 2023-12-13 09:02:21 +0000  amg@AVANCE500
# low field   high field   mi   maxi
  4.6581  4.6241  0.000  10000.000  # for region 1
  4.1201  4.1009  0.000  10000.000  # for region 2
  0.0867  -0.0984  0.000  10000.000  # for region 3
