A 1.0 #regions in PPM
# low field   high field  bias        slope
  180.05714146833165  167.3850527305394  0.0  0.0  # for region 1
  173.76075277899713  172.96468861819247  0.0  0.0  # for region 2
  73.95204024592192  57.30810279926942  0.0  0.0  # for region 3
  57.30810279926942  48.98613407594316  0.0  0.0  # for region 4
  48.98613407594316  9.456782640143468  0.0  0.0  # for region 5
