condition	mean	min	max
4 h after light	15.1497	14.3593	15.9401
8 h after light	8.389125	6.79922	9.97903
12 h after light	7.34781	6.61051	8.08511
4 h after dark	10.909626666666666	7.98878	14.5686
8 h after dark	14.367966666666666	12.4567	17.0585
12 h after dark	15.0418	12.0993	17.5502