condition	mean	min	max
4 h after light	4.088486666666666	3.9933	4.21664
8 h after light	4.07598	4.05545	4.11026
12 h after light	4.191066666666667	3.98924	4.57925
4 h after dark	4.278090000000001	4.00548	4.7742
8 h after dark	4.051563333333333	3.96431	4.1485
12 h after dark	4.04939	3.9818	4.09295