condition	mean	min	max
4 h after light	9.0999145	8.001169	10.19866
8 h after light	8.223828000000001	7.822498	8.625158
12 h after light	7.652274	7.515353	7.789195
4 h after dark	7.812967	7.624765	8.001169
8 h after dark	8.1808015	7.602004	8.759599
12 h after dark	8.733942	8.733942	8.733942