A 1.0 #regions in PPM
# low field   high field  bias        slope
  7.617696310465974  7.455527236815458  147335.1420341963  -11.84977070335413  # for region 1
  -0.037187749030165834  -0.4710448210487672  125843.75  -1.0555946516537653  # for region 2
