P    #regions in PPM
# 2023-11-02 12:14:28 +0100  nim51sx@woc2055
# low field   high field   mi   maxi
  11.051243081680933  10.695457643191947  0.306  0.602  # for region 1
  9.6518141444467  9.59511172979234  0.025  0.167  # for region 2
  9.529576129374197  9.184737935146412  0.121  0.498  # for region 3
