A 1.0 #regions in PPM
# low field   high field  bias        slope
  7.798476227719486  7.658930197491883  -0.0  -0.0  # for region 1
  7.481814082203003  7.288596501887861  -0.0  -0.0  # for region 2
  2.6352731092981885  2.549398629158125  -0.0  -0.0  # for region 3
  2.5472721902437403  2.5230306817966426  -0.0  -0.0  # for region 4