A 1.0 #regions in PPM
# low field   high field  bias        slope
  4.1064232989230405  3.938700087258382  -0.0  -0.0  # for region 1
  3.675933722317085  3.6200259850955323  -0.0  -0.0  # for region 2
  3.5418843375513496  3.1554969552730205  -0.0  -0.0  # for region 3
  2.0098831531148167  1.9567708027543418  -0.0  -0.0  # for region 4
  1.2159932845687695  1.1153593575699747  -0.0  -0.0  # for region 5