A 1.0 #regions in PPM
# low field   high field  bias        slope
  7.994136938954697  7.914095517788693  -0.0  -0.0  # for region 1
  1.2762207847874842  1.2065295473929458  -0.0  -0.0  # for region 2
  0.9713216211863788  0.8842075744432059  -0.0  -0.0  # for region 3
  0.8798518721060472  0.8210498905544054  -0.0  -0.0  # for region 4
  0.04355702337158649  -0.05880198155164176  -0.0  -0.0  # for region 5
