condition mean min max 4 h after light 5.645086666666667 5.13891 6.35315 8 h after light 4.25867 1.56306 6.68841 12 h after light 3.7381599999999997 2.58663 5.21552 4 h after dark 5.320806666666667 3.98889 6.57446 8 h after dark 5.239283333333334 3.2001 7.66019 12 h after dark 6.0501 5.11029 6.63882