condition	mean	min	max
4 h after light	2.65477	2.30427	3.00527
8 h after light	1.914105	1.6048	2.22341
12 h after light	2.43921	1.97226	2.90616
4 h after dark	3.12181	2.87648	3.36714
8 h after dark	2.182535	1.81922	2.54585
12 h after dark	2.073655	1.81579	2.33152