P    #regions in PPM
# 2024-02-22 10:10:14 -0500  suvee@LAPTOP-P57SIM1R
# low field   high field   mi   maxi
  157.11226963873685  113.31877085754564  0.749  4.494  # for region 1
  113.31877085754564  107.63466633928793  5.693  17.814  # for region 2
  107.63466633928793  104.05030727683095  0.684  6.318  # for region 3
  104.05030727683095  91.05089012134671  5.693  17.814  # for region 4
  80.16437065031613  73.23658553238758  7.048  10.611  # for region 5
  63.092328752563624  38.84508083981368  2.285  17.388  # for region 6
