condition	mean	min	max
4 h after light	4.376825	3.55266	5.20099
8 h after light	5.7796	5.46578	6.09342
12 h after light	10.23286	8.75572	11.71
4 h after dark	14.94685	13.9543	15.9394
8 h after dark	12.9605	12.8064	13.1146
12 h after dark	9.76737	9.01744	10.5173