condition	mean	min	max
4 h after light	2.37278	2.14936	2.5962
8 h after light	2.88876	2.60203	3.17549
12 h after light	2.66289	2.50849	2.81729
4 h after dark	2.1466833333333333	1.98444	2.25481
8 h after dark	2.06099	1.77712	2.40051
12 h after dark	1.61303	1.19919	1.89958