condition	mean	min	max
4 h after light	7.8827799999999995	7.864889999999999	7.896
8 h after light	8.064593333333333	8.00624	8.1088
12 h after light	8.032386666666666	7.987489999999999	8.059239999999999
4 h after dark	8.143676666666666	8.0255	8.276760000000001
8 h after dark	8.129529999999999	8.00672	8.346689999999999
12 h after dark	7.76999	7.559419999999999	7.942310000000001