condition	mean	min	max
0 h after light	10.67425	10.4916	10.8569
4 h after light	8.807315	8.57566	9.03897
8 h after light	17.0806	15.5085	18.6527
4 h after dark	16.0594	14.6169	17.5019
8 h after dark	12.43135	11.2835	13.5792
12 h after dark	9.402195	8.93734	9.86705