P    #regions in PPM
# 2023-07-31 15:37:22 +0100  rfcof@LAPTOP-J1A1NPTL
# low field   high field   mi   maxi
  2.7803  2.7331  0.000  10000.000  # for region 1
  0.0716  -0.0284  0.000  10000.000  # for region 2
