P    #regions in PPM
# 2024-07-15 11:32:53 -0400  suvee@LAPTOP-P57SIM1R
# low field   high field   mi   maxi
  161.61769008065184  139.83223342401226  1.003  12.404  # for region 1
  136.1168842267559  117.70901774944026  2.435  12.404  # for region 2
  109.77168082802895  98.11899470936126  2.951  13.178  # for region 3
  77.56498509204283  77.4396900762157  8.050  16.673  # for region 4
  77.4396900762157  77.28491388019394  3.810  5.615  # for region 5
  77.28491388019394  76.72477145649619  8.050  16.673  # for region 6
  75.80348457541433  75.16226890618137  2.721  5.672  # for region 7
  66.53852653268216  52.85928630642009  5.472  15.813  # for region 8
  45.259708402941165  5.910782813816943  2.607  8.565  # for region 9
