condition	mean	min	max
4 h after light	5.674015000000001	5.56399	5.78404
8 h after light	6.411965	6.26023	6.5637
12 h after light	6.02144	5.79524	6.24764
4 h after dark	8.098535	7.75196	8.44511
8 h after dark	8.79074	8.40095	9.18053
12 h after dark	7.983474999999999	7.07452	8.89243