condition	mean	min	max
0 h after light	19.50015	18.8044	20.1959
4 h after light	15.7395	13.7614	17.7176
8 h after light	8.723285	8.53318	8.91339
4 h after dark	8.51033	8.11755	8.90311
8 h after dark	12.60035	12.5973	12.6034
12 h after dark	15.549400000000002	14.598	16.5008