condition	mean	min	max
4 h after light	8.265973333333333	6.15004	9.43377
8 h after light	10.97297	3.69571	18.1275
12 h after light	17.296916666666668	9.72735	25.448
4 h after dark	19.0157	14.5469	24.1102
8 h after dark	17.8381	15.7706	21.4718
12 h after dark	8.346696666666666	6.47537	10.9969