P    #regions in PPM
# 2023-09-18 10:28:19 -0400  isaacs@CZC8497J60
# low field   high field   mi   maxi
  7.845301625942041  7.772924800357675  0.034  0.093  # for region 1
  7.772924800357675  7.772934800357675  0.034  0.100  # for region 2
  7.772924800357675  7.593387135132022  0.006  0.019  # for region 3
  7.177783469580606  6.981464600062536  0.037  0.075  # for region 4
  6.981454600062537  6.8656305670468765  0.032  0.055  # for region 5
  6.865620567046877  6.794942174020371  0.039  0.055  # for region 6
  6.388541414117968  6.30804657761556  0.010  0.020  # for region 7
  5.7050897193442145  5.259174660820759  0.009  0.036  # for region 8
  4.846047474247557  4.714895986446541  11.450  16.293  # for region 9
  4.596859647425626  4.505053605964914  0.012  0.024  # for region 10
  4.380712608101724  4.108447648519982  0.012  0.059  # for region 11
  4.074796923178418  3.9860813745506603  0.008  0.022  # for region 12
  3.906543296470601  3.8361826889382407  0.009  0.024  # for region 13
  3.221473994856367  2.7453940941386774  0.035  0.077  # for region 14
  2.011380799124127  1.651133491818313  0.032  0.063  # for region 15
