condition	mean	min	max
0 h after light	8.2277	7.51669	8.93871
4 h after light	7.466925	6.69022	8.24363
8 h after light	7.40153	7.16516	7.6379
4 h after dark	10.305735	9.99647	10.615
8 h after dark	9.938695	9.63889	10.2385
12 h after dark	8.896775	8.54105	9.2525