A 1.0 #regions in PPM
# low field   high field  bias        slope
  7.449668768349077  7.317018236586346  -0.0  -0.0  # for region 1
  5.312251648435896  5.264285493596746  -0.0  -0.0  # for region 2
  4.380448458996236  4.228422006863669  -0.0  -0.0  # for region 3
  3.9184072809462758  3.791718570835803  -0.0  -0.0  # for region 4
  3.7604190071614507  3.676953504029845  -0.0  -0.0  # for region 5
  3.6784439594429093  3.55622661557163  -0.0  -0.0  # for region 6