A 1.0 #regions in PPM
# low field   high field  bias        slope
  7.8469672804447965  7.740071157048222  -0.0  -0.0  # for region 1
  7.547394193888966  7.469531585488992  -0.0  -0.0  # for region 2
  7.47085129071611  7.394308387543255  -0.0  -0.0  # for region 3
  7.394308387543255  7.330962536641581  -0.0  -0.0  # for region 4
  7.330962536641581  7.275534917102617  -0.0  -0.0  # for region 5
  6.587968493774037  6.331945679713106  -0.0  -0.0  # for region 6
  4.71662648172044  4.595213600825566  -0.0  -0.0  # for region 7
