condition	mean	min	max
0 h after light	13.242	13.0067	13.4773
4 h after light	15.0594	12.7138	17.405
8 h after light	7.941325	7.04618	8.83647
4 h after dark	7.995445	6.63382	9.35707
8 h after dark	15.34655	14.9693	15.7238
12 h after dark	16.4773	15.7766	17.178