condition mean min max 0 h after light 3.7197250000000004 3.11565 4.3238 4 h after light 4.516305 4.09647 4.93614 8 h after light 5.863289999999999 5.70365 6.02293 4 h after dark 6.904835 6.88113 6.92854 8 h after dark 4.838875 4.82167 4.85608 12 h after dark 2.91812 2.57565 3.26059