condition	mean	min	max
4 h after light	8.50503	8.346639999999999	8.63345
8 h after light	8.49291	8.4084	8.58607
12 h after light	8.95373	8.87572	9.030339999999999
4 h after dark	8.341806666666667	8.16794	8.53514
8 h after dark	8.356393333333333	8.25672	8.47977
12 h after dark	8.502576666666666	8.416830000000001	8.599639999999999