P    #regions in PPM
# 2023-11-02 12:06:54 +0100  nim51sx@woc2055
# low field   high field   mi   maxi
  10.998156617854525  10.8146274283106  0.298  0.811  # for region 1
  10.445416227216517  10.2323297361813  0.022  0.050  # for region 2
  9.682864092789723  9.533321790198375  0.077  0.204  # for region 3
  9.495936214550538  9.29881227022558  0.264  0.447  # for region 4
