condition	mean	min	max
4 h after light	9.27553	9.22734	9.33988
8 h after light	8.834593333333334	8.6395	9.01416
12 h after light	8.500606666666666	8.35815	8.62623
4 h after dark	8.84854	8.749310000000001	8.9658
8 h after dark	8.91678	8.76869	9.051730000000001
12 h after dark	8.92335	8.802489999999999	9.01635