P    #regions in PPM
# 2023-12-12 12:11:08 +0000  amg@AVANCE500
# low field   high field   mi   maxi
  4.6598  4.6396  0.000  10000.000  # for region 1
  4.1253  4.1223  0.000  10000.000  # for region 2
  4.1223  4.1039  0.000  10000.000  # for region 3
  0.0627  -0.0776  0.000  10000.000  # for region 4
