condition	mean	min	max
0 h after light	8.447790000000001	7.71026	9.18532
4 h after light	6.36093	5.83906	6.8828
8 h after light	11.8712	11.5453	12.1971
4 h after dark	5.997655	5.75315	6.24216
8 h after dark	4.4794	3.72534	5.23346
12 h after dark	5.04306	4.98753	5.09859