condition	mean	min	max
4 h after light	3.19283	2.93706	3.4486
8 h after light	2.61615	2.33712	2.89518
12 h after light	2.9625	2.7125	3.2125
4 h after dark	4.54068	4.46666	4.6147
8 h after dark	4.436695	4.20585	4.66754
12 h after dark	4.00221	3.46727	4.53715