condition	mean	min	max
4 h after light	6.415335	5.53994	7.29073
8 h after light	7.11308	6.8819	7.34426
12 h after light	9.51575	9.15944	9.87206
4 h after dark	12.0649	11.5307	12.6122
8 h after dark	7.50929	6.71013	7.99588
12 h after dark	7.13065	6.21711	8.01249