condition	mean	min	max
4 h after light	7.80456	6.46813	9.14099
8 h after light	6.716205	5.95818	7.47423
12 h after light	6.710355	6.52024	6.90047
4 h after dark	9.564783333333333	9.3925	9.67666
8 h after dark	8.9523	8.50201	9.45788
12 h after dark	8.033283333333333	7.79491	8.27456