condition	mean	min	max
4 h after light	8.154075	6.7567	9.55145
8 h after light	15.0	13.0252	16.9748
12 h after light	13.81425	12.9529	14.6756
4 h after dark	8.017676666666667	7.101	9.30512
8 h after dark	6.808323333333333	5.78507	7.81459
12 h after dark	4.84537	3.79408	5.62774