condition	mean	min	max
4 h after light	8.0855175	8.054636	8.116399
8 h after light	7.5615105	7.46686	7.656161
12 h after light	7.5824565	7.508752	7.656161
4 h after dark	7.5514765	6.807253	8.2957
8 h after dark	7.9168985	7.316442	8.517355
12 h after dark	7.671887	7.671887	7.671887