A 1.0 #regions in PPM
# low field   high field  bias        slope
  8.11906916014423  7.925344931608025  126718.75  1.1318897637795278  # for region 1
  1.7691945983460042  1.4704994064174581  131562.5  -0.5751533742331287  # for region 2
