condition mean min max 0 h after light 6.08118 5.58633 6.57603 4 h after light 7.01477 6.99817 7.03137 8 h after light 7.031280000000001 5.75345 8.30911 4 h after dark 6.98299 6.93381 7.03217 8 h after dark 7.539490000000001 7.44113 7.63785 12 h after dark 6.04814 5.00788 7.0884