condition	mean	min	max
4 h after light	13.63825	13.3958	13.8807
8 h after light	12.9512	11.6368	14.2656
12 h after light	8.90238	8.58534	9.21942
4 h after dark	8.659875	8.27481	9.04494
8 h after dark	8.26985	8.14233	8.39737
12 h after dark	10.505625	9.26295	11.7483