A 1.0 #regions in PPM
# low field   high field  bias        slope
  7.949207559054391  7.908742135959657  0.0  0.0  # for region 1
  7.806829218535882  7.767862514815028  0.0  0.0  # for region 2
  7.689929107373318  7.641970087409189  0.0  0.0  # for region 3
  7.565535399341358  7.537059731237656  0.0  0.0  # for region 4
  7.466619920665342  7.421658339448971  0.0  0.0  # for region 5
  7.241812014583487  7.20734146898427  0.0  0.0  # for region 6
  7.180364520254447  7.130906780916439  0.0  0.0  # for region 7
