condition	mean	min	max
4 h after light	15.143325999999998	14.157928	16.128724
8 h after light	18.419923	17.754263	19.085583
12 h after light	13.9280055	12.678531	15.17748
4 h after dark	16.5349435	13.246128	19.823759
8 h after dark	17.804942	17.119266	18.490618
12 h after dark	16.760374	16.760374	16.760374