P    #regions in PPM
# 2023-11-02 12:15:12 +0100  nim51sx@woc2055
# low field   high field   mi   maxi
  11.073137570203333  10.695457643191947  0.304  0.611  # for region 1
  9.541953216053864  9.481706900483607  0.061  0.232  # for region 2
  9.4803135301988  9.124528091709815  0.147  0.501  # for region 3
