condition	mean	min	max
4 h after light	2.02603	1.52179	2.53027
8 h after light	2.037775	1.79945	2.2761
12 h after light	1.657355	1.58722	1.72749
4 h after dark	1.32619	1.24502	1.40736
8 h after dark	2.47654	2.29699	2.65609
12 h after dark	3.51982	3.07339	3.96625