condition	mean	min	max
4 h after light	6.1923200000000005	6.06157	6.26536
8 h after light	6.37602	6.270969999999999	6.4606699999999995
12 h after light	6.2570966666666665	6.1123400000000006	6.37903
4 h after dark	6.728423333333333	6.558339999999999	7.01663
8 h after dark	6.70366	6.572830000000001	6.92726
12 h after dark	6.706396666666667	6.55129	6.92445