condition	mean	min	max
4 h after light	7.736066666666667	7.447830000000001	7.90004
8 h after light	7.75564	7.7220699999999995	7.80036
12 h after light	8.129713333333333	8.03159	8.2472
4 h after dark	8.45388	8.33186	8.55609
8 h after dark	8.621893333333334	8.55737	8.66798
12 h after dark	8.824729999999999	8.75152	8.90097