condition	mean	min	max
4 h after light	8.890843333333333	8.778939999999999	9.02112
8 h after light	9.103203333333333	9.010689999999999	9.198360000000001
12 h after light	9.28642	9.16905	9.38435
4 h after dark	9.114023333333334	8.97688	9.22456
8 h after dark	8.947753333333333	8.83742	9.0951
12 h after dark	8.70988	8.566989999999999	8.837810000000001