condition	mean	min	max
0 h after light	15.70115	15.6336	15.7687
4 h after light	13.39985	12.5472	14.2525
8 h after light	14.71715	14.497	14.9373
4 h after dark	20.6511	19.6381	21.6641
8 h after dark	18.271349999999998	17.5063	19.0364
12 h after dark	14.91605	14.5403	15.2918