condition	mean	min	max
4 h after light	7.87159	7.77637	8.035810000000001
8 h after light	7.780506666666667	7.6158600000000005	7.895060000000001
12 h after light	7.874406666666667	7.77836	7.95143
4 h after dark	7.929600000000001	7.88197	7.96267
8 h after dark	7.923636666666666	7.8772899999999995	7.970839999999999
12 h after dark	7.965423333333334	7.891360000000001	8.09704