condition	mean	min	max
4 h after light	6.0878	5.76081	6.41479
8 h after light	4.982575	4.53764	5.42751
12 h after light	6.559245	6.12822	6.99027
4 h after dark	7.815775	7.80113	7.83042
8 h after dark	7.102264999999999	6.7395	7.46503
12 h after dark	6.534125	6.24267	6.82558