condition	mean	min	max
4 h after light	8.172502999999999	8.07199	8.273016
8 h after light	7.9724805	7.561056	8.383905
12 h after light	7.5987655	7.350414	7.847117
4 h after dark	7.628849	7.425693	7.832005
8 h after dark	8.1545565	7.847117	8.461996
12 h after dark	8.123048	8.123048	8.123048