P    #regions in PPM
# 2023-12-13 15:50:17 +0000  amg@AVANCE500
# low field   high field   mi   maxi
  4.6535  4.6405  0.000  10000.000  # for region 1
  4.1196  4.0986  0.000  10000.000  # for region 2
  0.0938  -0.1876  0.000  10000.000  # for region 3
