condition	mean	min	max
4 h after light	9.72974	9.60007	9.87613
8 h after light	8.965593333333334	8.85776	9.081380000000001
12 h after light	8.37888	8.29782	8.42557
4 h after dark	8.638183333333334	8.24699	8.83853
8 h after dark	9.52666	9.40939	9.6803
12 h after dark	9.727576666666666	9.668239999999999	9.78411