condition	mean	min	max
4 h after light	6.7625399999999996	4.48502	9.04006
8 h after light	4.734615	3.92373	5.5455
12 h after light	9.11579	8.13628	10.0953
4 h after dark	15.857	15.1833	16.5307
8 h after dark	15.1556	14.7768	15.5344
12 h after dark	11.10105	10.1393	12.0628