condition	mean	min	max
4 h after light	7.21781	7.154089999999999	7.31142
8 h after light	7.1701966666666666	7.10087	7.30737
12 h after light	7.386419999999999	7.298989999999999	7.47675
4 h after dark	7.0731399999999995	6.9326	7.277539999999999
8 h after dark	7.15843	7.081980000000001	7.29586
12 h after dark	7.046146666666667	6.9409	7.11857