A 1.0 #regions in PPM
# low field   high field  bias        slope
  8.509113180316541  8.322936661204691  19000.0  -29.459901800327334  # for region 1
  8.162147849244459  8.022515459910572  57000.0  -61.002178649237486  # for region 2
  7.942121053930456  7.836338940798724  133000.0  -195.4022988505747  # for region 3
  7.819413802697647  7.696706551464837  108000.0  -158.41584158415844  # for region 4
  0.3725212851454737  0.1205215922529474  4000.0  60.44751996360458  # for region 5
