condition mean min max 4 h after light 6.70488 6.02862 7.38114 8 h after light 6.970280000000001 6.78148 7.15908 12 h after light 6.50071 5.50622 7.4952 4 h after dark 6.672883333333333 5.94506 7.25844 8 h after dark 5.39762 5.06078 5.84257 12 h after dark 4.79251 4.62536 5.00105