A 1.0 #regions in PPM
# low field   high field  bias        slope
  8.197454259986205  8.089989631797737  -0.0  -0.0  # for region 1
  8.053294392904114  7.85802330022019  -0.0  -0.0  # for region 2
  7.805601530372157  7.702068534922291  -0.0  -0.0  # for region 3
  7.6981369021836885  7.556598123593999  -0.0  -0.0  # for region 4
  7.534318871408585  7.4556862166365345  -0.0  -0.0  # for region 5