condition	mean	min	max
4 h after light	8.223075	7.44811	8.99804
8 h after light	7.503825	6.91169	8.09596
12 h after light	9.20056	8.98201	9.41911
4 h after dark	11.77415	11.2811	12.2672
8 h after dark	11.3589	10.8642	11.8536
12 h after dark	10.00393	9.45956	10.5483