condition	mean	min	max
4 h after light	7.1311754999999994	7.098508	7.163843
8 h after light	7.404547	7.200948	7.608146
12 h after light	7.245582000000001	7.070616	7.420548
4 h after dark	7.9374625000000005	7.823652	8.051273
8 h after dark	7.762939	7.534612	7.991266
12 h after dark	8.130646	8.130646	8.130646