condition	mean	min	max
4 h after light	17.1274855	15.9846	18.270371
8 h after light	16.3847245	16.258545	16.510904
12 h after light	18.7373735	18.270371	19.204376
4 h after dark	21.098388	18.336199	23.860577
8 h after dark	18.556245500000003	18.270371	18.84212
12 h after dark	19.36304	19.36304	19.36304