condition	mean	min	max
4 h after light	6.28867	3.39412	9.19478
8 h after light	8.69941	2.74267	14.435
12 h after light	10.98281	5.76623	17.1686
4 h after dark	13.1248	10.2682	16.5502
8 h after dark	8.02846	6.48981	9.07733
12 h after dark	5.82234	5.05179	6.31327