condition	mean	min	max
0 h after light	7.156305	5.73117	8.58144
4 h after light	13.29735	10.9286	15.6661
8 h after light	19.0606	15.9188	22.2024
4 h after dark	12.6664	12.3395	12.9933
8 h after dark	5.4821	5.28228	5.68192
12 h after dark	2.126925	1.39721	2.85664