condition	mean	min	max
4 h after light	6.8818	6.35345	7.41015
8 h after light	6.42273	6.33404	6.51142
12 h after light	8.330955	7.85884	8.80307
4 h after dark	8.53556	7.72284	9.23552
8 h after dark	7.9661599999999995	7.31659	8.74472
12 h after dark	9.49558	9.02186	9.92182