A 1.0 #regions in PPM
# low field   high field  bias        slope
  2.7466677216120328  2.637634078782652  71250.0  -31.664656212303978  # for region 1
  2.5972058741380506  2.5151243677384048  71250.0  -31.664656212303978  # for region 2
  0.1252207862722057  -0.14181155290763992  71250.0  -31.664656212303978  # for region 3
