A 1.0 #regions in PPM
# low field   high field  bias        slope
  8.071013232910753  7.886842461153057  141781.25  -0.0  # for region 1
  1.5121541019226417  0.5170591445283872  133625.0  -0.8536678944137506  # for region 2
  1.448177797840341  1.1641300625726214  134343.75  1.6801075268817174  # for region 3
