condition	mean	min	max
4 h after light	5.547305	4.6691	6.42551
8 h after light	4.791145	4.61298	4.96931
12 h after light	5.104625	4.55761	5.65164
4 h after dark	6.329835	6.00777	6.6519
8 h after dark	6.190815	5.85537	6.52626
12 h after dark	6.166485	6.03736	6.29561