$hash => {
    file1 => {
                foo    => 4,
                bar    => 6,
                baz    => 4,
                quux   => 8,
                quuux  => 6,
                quuuux => 0,
             },

    file2 => {
                foo    => 4,
                bar    => 8,
                baz    => 4,
                quux   => 8,
                quuux  => 5,
                quuuux => 0,
             },

    file3 => {
                foo    => 4,
                bar    => 8,
                baz    => 5,
                quux   => 8,
                quuux  => 5,
                quuuux => 0,
             },
}