condition	mean	min	max
4 h after light	9.11036	9.038	9.14743
8 h after light	9.06279	8.98522	9.14771
12 h after light	9.11789	8.99517	9.2716
4 h after dark	9.199496666666667	9.147639999999999	9.23034
8 h after dark	9.200566666666665	9.158439999999999	9.25814
12 h after dark	9.23251	9.18977	9.2768