condition	mean	min	max
4 h after light	8.45758	8.10538	8.75126
8 h after light	8.42224	8.16431	8.59195
12 h after light	8.279386666666667	8.07832	8.388110000000001
4 h after dark	8.340296666666667	8.05312	8.52662
8 h after dark	8.23405	8.114239999999999	8.348130000000001
12 h after dark	8.353543333333333	8.1022	8.60026