condition	mean	min	max
4 h after light	8.6615055	8.6363	8.686711
8 h after light	8.637189	8.399367	8.875011
12 h after light	8.862643	8.358066	9.36722
4 h after dark	8.4586785	8.424206	8.493151
8 h after dark	7.833786	7.820455	7.847117
12 h after dark	9.667875	9.667875	9.667875