condition	mean	min	max
4 h after light	9.37468	9.310369999999999	9.48758
8 h after light	9.071943333333333	8.90327	9.26195
12 h after light	8.828523333333333	8.65457	8.99734
4 h after dark	8.797740000000001	8.41507	9.18275
8 h after dark	8.381446666666665	8.07659	8.83133
12 h after dark	7.517516666666666	7.338239999999999	7.69764