condition	mean	min	max
4 h after light	7.539305000000001	7.30625	7.77236
8 h after light	6.62121	5.9924	7.25002
12 h after light	6.308495000000001	6.24171	6.37528
4 h after dark	3.60585	3.31993	3.89177
8 h after dark	3.133175	3.11932	3.14703
12 h after dark	4.31969	4.18838	4.451