condition	mean	min	max
4 h after light	7.912053333333334	7.719110000000001	8.177480000000001
8 h after light	8.190023333333333	8.05229	8.389610000000001
12 h after light	8.21181	7.881410000000001	8.55268
4 h after dark	8.114023333333332	7.90952	8.51338
8 h after dark	8.049043333333334	7.83812	8.43229
12 h after dark	7.94967	7.78793	8.03696