condition	mean	min	max
4 h after light	7.8169466666666665	7.1936	8.35942
8 h after light	7.543856666666667	7.2861199999999995	7.8459699999999994
12 h after light	7.74031	7.2747399999999995	8.19881
4 h after dark	8.411633333333334	8.12307	8.718860000000001
8 h after dark	8.63773	8.2787	9.1493
12 h after dark	8.83352	8.60177	9.06258