condition	mean	min	max
4 h after light	4.09049	4.02924	4.15174
8 h after light	7.31934	7.22909	7.40959
12 h after light	5.898455	5.61661	6.1803
4 h after dark	9.25656	8.30782	10.2053
8 h after dark	7.45276	7.43159	7.47393
12 h after dark	6.33303	5.96726	6.6988