condition	mean	min	max
4 h after light	4.02711	3.98907	4.09506
8 h after light	4.043896666666667	3.9052	4.2131099999999995
12 h after light	4.032626666666667	3.89506	4.16814
4 h after dark	4.037743333333333	3.9770300000000005	4.09157
8 h after dark	4.011006666666667	3.95877	4.04331
12 h after dark	4.0001999999999995	3.9591	4.05434