condition	mean	min	max
4 h after light	7.9862166666666665	7.859660000000001	8.05382
8 h after light	7.659833333333332	7.5673699999999995	7.762689999999999
12 h after light	7.556236666666667	7.53035	7.60456
4 h after dark	7.77071	7.60027	7.88559
8 h after dark	8.03541	7.87635	8.33191
12 h after dark	8.0733	7.99833	8.140369999999999