P    #regions in PPM
# 2023-12-12 11:00:43 +0000  amg@AVANCE500
# low field   high field   mi   maxi
  4.6586  4.6369  50.000  10000.000  # for region 1
  4.1231  4.1193  0.000  10000.000  # for region 2
  4.1193  4.0988  0.000  10000.000  # for region 3
  0.0704  -0.0451  0.000  10000.000  # for region 4
