condition	mean	min	max
0 h after light	4.843795	4.7322	4.95539
4 h after light	9.39776	9.31476	9.48076
8 h after light	7.25365	6.52491	7.98239
4 h after dark	9.145305	8.63528	9.65533
8 h after dark	7.890005	7.46536	8.31465
12 h after dark	5.39359	3.47781	7.30937