condition	mean	min	max
4 h after light	2.168975	1.66655	2.6714
8 h after light	1.79071	1.65719	1.92423
12 h after light	1.909215	1.79672	2.02171
4 h after dark	2.13937	2.00757	2.30004
8 h after dark	2.08134	1.76846	2.37504
12 h after dark	2.03792	1.81944	2.36283