A 1.0 #regions in PPM
# low field   high field  bias        slope
  7.943870175240109  7.819711278145184  -0.0  -0.0  # for region 1
  7.808744282733553  7.735373531083708  -0.0  -0.0  # for region 2
  7.714410459183752  7.630558171583928  -0.0  -0.0  # for region 3
  7.409297146081404  7.288012297530343  -0.0  -0.0  # for region 4
  7.273642054811023  7.21960994218638  -0.0  -0.0  # for region 5
  7.01738831851022  6.9597398707853415  -0.0  -0.0  # for region 6
  2.6413470593944366  2.5732170757195805  -0.0  -0.0  # for region 7