P    #regions in PPM
# 2023-12-13 12:19:30 +0000  amg@AVANCE500
# low field   high field   mi   maxi
  0.0639  0.0553  0.000  10000.000  # for region 1
  0.0553  0.05451  0.000  10000.000  # for region 2
  0.0545  -0.047  0.000  10000.000  # for region 3
