condition	mean	min	max
0 h after light	7.920325	7.41338	8.42727
4 h after light	5.21768	4.00618	6.42918
8 h after light	5.329135	4.55434	6.10393
4 h after dark	14.2569	12.4098	16.104
8 h after dark	13.2922	13.0872	13.4972
12 h after dark	7.67769	7.36442	7.99096