condition	mean	min	max
0 h after light	7.40465	6.60791	8.20139
4 h after light	5.196985	4.55476	5.83921
8 h after light	5.14968	4.16683	6.13253
4 h after dark	9.092285	9.01681	9.16776
8 h after dark	9.7466	9.3876	10.1056
12 h after dark	7.56243	7.24141	7.88345