condition	mean	min	max
4 h after light	8.91042	8.826789999999999	9.02462
8 h after light	8.912536666666668	8.7094	9.1231
12 h after light	9.167256666666667	9.05372	9.26789
4 h after dark	9.5073	9.3711	9.5808
8 h after dark	9.18023	9.05512	9.29589
12 h after dark	9.025686666666667	8.88647	9.2917