condition	mean	min	max
4 h after light	7.55579	6.53805	8.57353
8 h after light	8.03659	7.77357	8.29961
12 h after light	8.1896	7.99094	8.38826
4 h after dark	10.24495	10.1255	10.3644
8 h after dark	8.61505	8.07815	9.15195
12 h after dark	8.8539	8.8457	8.8621