condition	mean	min	max
4 h after light	7.611853333333333	7.48402	7.738010000000001
8 h after light	7.37162	7.10712	7.504410000000001
12 h after light	7.483196666666666	7.28878	7.601489999999999
4 h after dark	7.954139999999999	7.9069899999999995	8.035839999999999
8 h after dark	8.224593333333333	8.046439999999999	8.415980000000001
12 h after dark	8.70844	8.62331	8.80262