A 1.0 #regions in PPM
# low field   high field  bias        slope
  8.386138523453633  7.298207039329919  122375.0  1.8604324627913515  # for region 1
  7.645669151588308  7.417818084156869  129812.5  0.7121313672922258  # for region 2
  2.8172665429830297  2.34601468488405  138453.125  0.6480881399870382  # for region 3
