P    #regions in PPM
# 2023-12-12 16:03:30 +0000  amg@AVANCE500
# low field   high field   mi   maxi
  4.6593  4.6363  0.000  10000.000  # for region 1
  4.1206  4.1024  0.000  10000.000  # for region 2
  0.0833  -0.0434  0.000  10000.000  # for region 3
