condition	mean	min	max
0 h after light	14.53965	13.2882	15.7911
4 h after light	15.35455	13.5831	17.126
8 h after light	12.039855	9.74701	14.3327
4 h after dark	19.9929	18.8068	21.179
8 h after dark	21.628149999999998	21.5383	21.718
12 h after dark	17.271	13.5621	20.9799