condition	mean	min	max
0 h after light	19.19815	18.5372	19.8591
4 h after light	13.197	12.0955	14.2985
8 h after light	5.08129	4.68618	5.4764
4 h after dark	6.30116	6.28481	6.31751
8 h after dark	16.5155	15.6076	17.4234
12 h after dark	16.83045	16.3516	17.3093