P    #regions in PPM
# 2018-04-12 13:23:08 +0200  ceisam@P15q
# low field   high field   mi   maxi
  8.200371057513916  6.8645640074211505  0.339  2.635  # for region 1
  2.683982683982684  2.3438466295609155  1.635  2.296  # for region 2
  2.2572665429808287  2.0531849103277677  3.414  3.812  # for region 3
  0.43290043290043295  0.10513296227581942  7.832  16.246  # for region 4