P    #regions in PPM
# 2020-03-17 13:42:11 +0100  Admin@HFD-002
# low field   high field   mi   maxi
  11.3194552949495  10.89595224541089  6.073  7.889  # for region 1
  10.50534263661314  9.90503734309239  13.404  16.414  # for region 2
  8.77843699771783  8.687980035680456  5.016  6.903  # for region 3
  7.6518366523432695  7.503816169009386  4.776  6.983  # for region 4
  7.187216801878579  7.047419678729911  5.699  7.745  # for region 5
