condition	mean	min	max
4 h after light	7.378449999999999	6.36649	8.39041
8 h after light	8.014225	7.49774	8.53071
12 h after light	11.20405	11.0127	11.3954
4 h after dark	13.39645	12.991	13.8019
8 h after dark	15.192599999999999	14.9834	15.4018
12 h after dark	10.820445	8.28349	13.3574