A 1.0 #regions in PPM
# low field   high field  bias        slope
  9.885110024823133  9.831729460133367  126000.0  1363.6363636363637  # for region 1
  9.778348895443601  9.661882208847747  56000.0  -57.59162303664918  # for region 2
  8.691326487215628  8.608829250876896  120000.0  -95.94095940959404  # for region 3
  7.628567972028456  7.502395728216281  80000.0  9.66183574879227  # for region 4
  7.099615103738952  7.012265088792061  100000.0  -174.21602787456442  # for region 5
