condition	mean	min	max
4 h after light	4.016290000000001	3.98156	4.040080000000001
8 h after light	4.019353333333333	3.9542	4.070869999999999
12 h after light	3.89661	3.8300699999999996	3.94371
4 h after dark	4.002173333333333	3.96366	4.03986
8 h after dark	3.9413566666666666	3.8492900000000003	4.00798
12 h after dark	3.9755366666666667	3.88405	4.13371