A 1.0 #regions in PPM
# low field   high field  bias        slope
  7.345070792964701  7.211036654406951  -0.0  -0.0  # for region 1
  7.217738361334838  7.144019585128076  -0.0  -0.0  # for region 2
  7.144019585128076  7.056897395065539  -0.0  -0.0  # for region 3
  7.016687153498213  6.882653014940463  -0.0  -0.0  # for region 4
  5.44178602544465  5.287646766103238  -0.0  -0.0  # for region 5
