condition	mean	min	max
4 h after light	3.76816	3.50153	4.03479
8 h after light	3.6524	3.18667	4.11813
12 h after light	2.63786	2.45889	2.81683
4 h after dark	2.75298	2.47756	3.0284
8 h after dark	1.607335	1.37075	1.84392
12 h after dark	1.914965	1.63868	2.19125