condition	mean	min	max
4 h after light	8.249122	8.080643	8.417601
8 h after light	8.452424	8.292848	8.612
12 h after light	8.2905505	8.016086	8.565015
4 h after dark	7.7856245	7.490606	8.080643
8 h after dark	8.581436	8.044945	9.117927
12 h after dark	7.592228	7.592228	7.592228