condition mean min max 0 h after light 0.0 0.0 0.0 4 h after light 0.0 0.0 0.0 8 h after light 0.0508755 0.0 0.101751 4 h after dark 0.0490859 0.0 0.0981718 8 h after dark 0.0 0.0 0.0 12 h after dark 0.0 0.0 0.0