condition	mean	min	max
4 h after light	7.6458705	7.267669	8.024072
8 h after light	7.935539500000001	7.358543	8.512536
12 h after light	7.142551	7.077268	7.207834
4 h after dark	8.226078999999999	8.028787	8.423371
8 h after dark	7.6929545	7.565454	7.820455
12 h after dark	7.820455	7.820455	7.820455