condition	mean	min	max
4 h after light	2.227685	2.052	2.40337
8 h after light	2.92001	2.8076	3.03242
12 h after light	2.7212	2.65469	2.78771
4 h after dark	4.08922	4.02119	4.15725
8 h after dark	3.28174	2.88135	3.68213
12 h after dark	3.17286	3.05267	3.29305