A 1.0 #regions in PPM
# low field   high field  bias        slope
  8.071265436181829  7.815772141799094  104750.0  3.3602150537634405  # for region 1
  7.481473522170222  7.308491475414841  111843.75  -12.235449735449741  # for region 2
  3.2766079409611932  2.8549532997651146  109875.0  -1.9460535843591589  # for region 3
