condition	mean	min	max
4 h after light	7.0653266666666665	6.8372399999999995	7.20317
8 h after light	6.8372399999999995	6.69117	6.990989999999999
12 h after light	7.346259999999999	7.266769999999999	7.41557
4 h after dark	7.799406666666667	7.73172	7.843089999999999
8 h after dark	7.866386666666667	7.6127199999999995	8.03298
12 h after dark	8.19891	8.1633	8.251610000000001