P    #regions in PPM
# 2023-12-13 08:56:59 +0000  amg@AVANCE500
# low field   high field   mi   maxi
  4.6576  4.6313  0.000  10000.000  # for region 1
  4.12  4.0979  0.000  10000.000  # for region 2
  0.1897  -0.2277  0.000  10000.000  # for region 3
