condition	mean	min	max
4 h after light	3.84936	3.16019	4.53853
8 h after light	7.00077	6.87261	7.12893
12 h after light	7.68805	7.6408	7.7353
4 h after dark	6.913625	6.27504	7.55221
8 h after dark	16.6885	12.1471	21.2299
12 h after dark	17.10725	10.4327	23.7818