condition	mean	min	max
4 h after light	9.612455	7.24801	11.9769
8 h after light	7.53246	6.64085	8.42407
12 h after light	6.509535	5.00971	8.00936
4 h after dark	21.15365	13.3375	28.9698
8 h after dark	7.88416	6.89804	8.87028
12 h after dark	6.39848	5.27897	7.51799