condition	mean	min	max
4 h after light	8.21138	7.74918	8.52148
8 h after light	7.4839	7.455030000000001	7.534339999999999
12 h after light	7.980523333333333	7.89628	8.05227
4 h after dark	8.823929999999999	8.59193	8.97004
8 h after dark	9.049646666666668	8.80562	9.204410000000001
12 h after dark	9.057276666666667	8.747810000000001	9.29941