P    #regions in PPM
# 2023-12-13 08:51:12 +0000  amg@AVANCE500
# low field   high field   mi   maxi
  4.6577  4.6285  0.000  10000.000  # for region 1
  4.1202  4.1002  0.000  10000.000  # for region 2
  0.0632  -0.1138  0.000  10000.000  # for region 3
