condition	mean	min	max
4 h after light	10.05405	9.7013	10.36697
8 h after light	8.34786	7.9695	8.7156
12 h after light	8.233466666666667	7.79847	8.45455
4 h after dark	10.52122	9.86134	11.30917
8 h after dark	11.41867	11.0484	11.88058
12 h after dark	11.423953333333333	11.00262	11.66729