condition	mean	min	max
4 h after light	8.578623333333333	8.37347	8.72207
8 h after light	9.02343	8.71354	9.20911
12 h after light	8.961703333333332	8.7063	9.215539999999999
4 h after dark	9.155993333333333	8.891639999999999	9.44558
8 h after dark	9.063316666666665	8.86022	9.339839999999999
12 h after dark	8.96794	8.873280000000001	9.09186