A 1.0 #regions in PPM
# low field   high field  bias        slope
  7.7860235003092155  7.649969078540508  -0.0  -0.0  # for region 1
  7.64378478664193  7.53865182436611  -0.0  -0.0  # for region 2
  7.452071737786024  7.278911564625851  -0.0  -0.0  # for region 3
  7.241805813234385  7.105751391465677  -0.0  -0.0  # for region 4
  2.609771181199753  2.4489795918367347  -0.0  -0.0  # for region 5
  2.350030921459493  2.1830550401978974  -0.0  -0.0  # for region 6