A 1.0 #regions in PPM
# low field   high field  bias        slope
  7.386718854552718  7.238820145562785  -0.0  -0.0  # for region 1
  4.3575341852404055  4.193202286362704  -0.0  -0.0  # for region 2
  3.8453664337382336  3.7275952395425467  -0.0  -0.0  # for region 3
  3.678295669879236  3.612562910328155  -0.0  -0.0  # for region 4
  3.60982404534686  3.4947917161324686  -0.0  -0.0  # for region 5