condition	mean	min	max
4 h after light	7.038505	6.06832	8.00869
8 h after light	4.54395	4.4852	4.6027
12 h after light	3.908565	3.56541	4.25172
4 h after dark	5.313063333333333	5.01443	5.53878
8 h after dark	6.9005133333333335	6.19761	7.49324
12 h after dark	7.232236666666667	7.01905	7.39984