P    #regions in PPM
# 2023-12-12 10:23:52 +0000  amg@AVANCE500
# low field   high field   mi   maxi
  4.6549  4.6415  0.000  10000.000  # for region 1
  4.1184  4.1031  0.000  10000.000  # for region 2
  0.2452  -0.1745  0.000  10000.000  # for region 3
