condition	mean	min	max
4 h after light	5.92513	5.68123	6.16903
8 h after light	4.830915	4.77662	4.88521
12 h after light	5.995945	5.62779	6.3641
4 h after dark	6.62388	5.83105	7.41671
8 h after dark	6.154505	5.52599	6.78302
12 h after dark	6.85289	6.31195	7.39383