condition	mean	min	max
4 h after light	7.7325099999999996	7.437189999999999	7.90785
8 h after light	8.030083333333334	7.9981800000000005	8.084710000000001
12 h after light	8.181149999999999	8.021139999999999	8.29299
4 h after dark	8.104356666666666	7.9900899999999995	8.24043
8 h after dark	8.205366666666666	8.12842	8.32427
12 h after dark	8.130749999999999	7.82799	8.33569