condition	mean	min	max
4 h after light	8.83616	8.82129	8.860669999999999
8 h after light	8.33165	8.29715	8.364289999999999
12 h after light	8.244656666666666	8.06974	8.36187
4 h after dark	7.723223333333333	7.44073	7.86788
8 h after dark	7.705496666666667	7.47461	7.982260000000001
12 h after dark	7.790313333333334	7.65336	7.88513