condition	mean	min	max
4 h after light	7.93891	7.484030000000001	8.23971
8 h after light	7.793279999999999	7.124210000000001	8.22209
12 h after light	8.32844	7.84655	8.7087
4 h after dark	8.213863333333334	7.624689999999999	8.592880000000001
8 h after dark	8.251776666666666	7.5533	8.82655
12 h after dark	8.262003333333332	7.577310000000001	8.624189999999999