condition	mean	min	max
4 h after light	8.8040205	7.910659	9.697382
8 h after light	7.311801	7.110046	7.513556
12 h after light	7.9711605	7.502826	8.439495
4 h after dark	7.2577605	6.832914	7.682607
8 h after dark	7.550505	7.536442	7.564568
12 h after dark	7.513556	7.513556	7.513556