condition	mean	min	max
4 h after light	1.902765	1.6969	2.10863
8 h after light	1.709855	1.65749	1.76222
12 h after light	2.15267	1.93954	2.3658
4 h after dark	2.76132	2.60758	2.91506
8 h after dark	3.74673	3.69882	3.79464
12 h after dark	2.57293	2.36625	2.77961