A 1.0 #regions in PPM
# low field   high field  bias        slope
  7.239246732849471  7.045338338219574  -0.0  -0.0  # for region 1
  6.77386658573772  6.605812643725143  -0.0  -0.0  # for region 2
  3.7876773084373125  3.6325505927333954  -0.0  -0.0  # for region 3
  2.8698442405224687  2.740571977435871  -0.0  -0.0  # for region 4