P    #regions in PPM
# 2020-06-17 19:12:51 +0100  amg@AVANCE500
# low field   high field   mi   maxi
  5.25  5.2423  0.000  10000.000  # for region 1
  5.2423  5.2316  0.000  10000.000  # for region 2
  1.0716  1.0503  0.000  10000.000  # for region 3
  0.5527  -0.306  0.000  10000.000  # for region 4
