condition	mean	min	max
4 h after light	8.373161	7.60741	9.138912
8 h after light	8.4025585	7.671887	9.13323
12 h after light	7.5660375	7.43562	7.696455
4 h after dark	8.72129	8.521871	8.920709
8 h after dark	8.02022	7.376904	8.663536
12 h after dark	9.162432	9.162432	9.162432