condition	mean	min	max
4 h after light	6.10009	5.89686	6.37014
8 h after light	6.007586666666667	5.7765699999999995	6.1906099999999995
12 h after light	5.938856666666667	5.7908800000000005	6.07074
4 h after dark	6.056266666666667	5.9549199999999995	6.21764
8 h after dark	6.076343333333333	5.90051	6.25694
12 h after dark	6.07094	5.85659	6.43625