P    #regions in PPM
# 2025-09-29 15:58:22 -0300  Irina@Irinas-MacBook-Pro.local
# low field   high field   mi   maxi
  8.609267605978404  7.505478059874078  0.022  3.380  # for region 1
  5.489019955544108  5.365584510303481  1.295  1.361  # for region 2
  5.365584510303481  5.188146057770081  0.043  0.782  # for region 3
  5.188146057770081  5.110998904494689  1.295  1.361  # for region 4
