P    #regions in PPM
# 2023-04-21 14:42:23 +0100  sgjburro@HCC8-023
# low field   high field   mi   maxi
  139.10746271785894  127.65614679721199  -19.244  -5.660  # for region 1
  78.20728259441836  72.48162463409489  -2.358  -0.377  # for region 2
  52.83220754298478  18.08787401102188  12.075  38.488  # for region 3
