condition	mean	min	max
0 h after light	8.489730000000002	8.28625	8.69321
4 h after light	6.702395	6.69022	6.71457
8 h after light	5.79205	5.64541	5.93869
4 h after dark	8.284295	7.43328	9.13531
8 h after dark	7.129085	6.80409	7.45408
12 h after dark	8.35357	7.58496	9.12218