P    #regions in PPM
# 2021-04-16 10:44:28 +0100  Service@fellbarrow
# low field   high field   mi   maxi
  170.53815761946086  144.37605389374812  3.833  15.000  # for region 1
  144.37605389374812  131.1335075634491  14.514  16.796  # for region 2
  131.1335075634491  -52.001218516540156  3.833  15.000  # for region 3
