condition	mean	min	max
3 h after light	25.633466666666667	23.1391	30.5062
6 h after light	12.22056	9.25898	14.3503
9 h after light	7.333373333333333	5.25341	10.0818
12 h after light	8.348595	3.03059	17.0285
3 h after dark	19.6799	16.5056	23.7812
6 h after dark	17.6932	15.0309	20.5697
9 h after dark	18.252133333333333	12.1597	24.0828
12 h after dark	15.7491	14.9393	16.5589