condition	mean	min	max
4 h after light	8.292637	7.427816	9.157458
8 h after light	8.789223	8.387326	9.19112
12 h after light	8.537255	8.007489	9.067021
4 h after dark	7.765103	7.14288	8.387326
8 h after dark	8.2469355	8.106545	8.387326
12 h after dark	8.767846	8.767846	8.767846