A 1.0 #regions in PPM
# low field   high field  bias        slope
  7.522761164685977  7.43202136890286  -0.0  -0.0  # for region 1
  7.151160096240834  7.064741243114056  -0.0  -0.0  # for region 2
  3.2191022789724597  3.0937949419386324  -0.0  -0.0  # for region 3
  2.7913289559949113  2.68330538958644  -0.0  -0.0  # for region 4
  2.3160252637976355  2.1950388694201473  -0.0  -0.0  # for region 5