condition	mean	min	max
4 h after light	8.198963333333333	8.05296	8.434239999999999
8 h after light	8.075463333333333	7.87091	8.32087
12 h after light	8.303313333333334	8.187510000000001	8.5025
4 h after dark	8.533163333333333	8.25795	8.893289999999999
8 h after dark	8.43299	8.285060000000001	8.725719999999999
12 h after dark	8.29632	8.23674	8.36707