condition	mean	min	max
4 h after light	12.2927	12.0184	12.567
8 h after light	7.74788	7.11335	8.38241
12 h after light	6.76729	6.67276	6.86182
4 h after dark	9.77832	9.6057	9.95094
8 h after dark	17.211599999999997	16.9702	17.453
12 h after dark	14.781400000000001	14.435	15.1278