A 1.0 #regions in PPM
# low field   high field  bias        slope
  7.639667485923656  7.4727410295669845  -0.0  -0.0  # for region 1
  7.344764079693537  7.26686506672709  -0.0  -0.0  # for region 2
  7.26686506672709  7.133323901641753  -0.0  -0.0  # for region 3
  2.2813282368745074  2.181172363060505  -0.0  -0.0  # for region 4
  1.9919890458562775  1.9085258176779416  -0.0  -0.0  # for region 5