A 1.0 #regions in PPM
# low field   high field  bias        slope
  8.406334854468804  8.226257574236756  -0.0  -0.0  # for region 1
  7.898844337451213  7.808805697335189  -0.0  -0.0  # for region 2
  7.787717761911142  7.727218481146228  -0.0  -0.0  # for region 3
  7.572841006090931  7.4664457192284965  -0.0  -0.0  # for region 4
