P    #regions in PPM
# 2023-11-02 12:09:59 +0100  nim51sx@woc2055
# low field   high field   mi   maxi
  11.025380114303527  10.642925675426156  0.336  0.600  # for region 1
  10.127875573909096  9.998352412691611  0.011  0.109  # for region 2
  9.593443597358267  9.310006748993409  0.060  0.510  # for region 3
