condition	mean	min	max
0 h after light	18.52615	16.8694	20.1829
4 h after light	11.83815	11.5951	12.0812
8 h after light	10.168175	9.34625	10.9901
4 h after dark	22.37805	17.774	26.9821
8 h after dark	13.728000000000002	13.5949	13.8611
12 h after dark	18.101	17.0448	19.1572