A 1.0 #regions in PPM
# low field   high field  bias        slope
  7.312371634922436  7.268631199386307  0.0  0.0  # for region 1
  7.242258289724816  7.192085437198079  0.0  0.0  # for region 2
  7.179863844915925  7.0994586325333335  0.0  0.0  # for region 3
  7.066010064182175  7.007475069567648  0.0  0.0  # for region 4
  3.5618936292207786  3.4450470826241344  0.0  0.0  # for region 5
