--- two rows below -- 2 2014-10-01 2 2014-10-02 1 --- zero rows below -- --- one row below -- 1 2014-10-01 2 --- two rows below -- 2 2014-10-01 2 2014-10-02 1 --- two rows below -- 2 2014-10-01 2 2014-10-02 1 4 2014-10-01 2 2014-10-02 1 2015-01-01 4 2015-01-02 3 --- 2 * 3 rows below -- 2 2014-10-01 2 2014-10-02 1 2014-10-01 2 2014-10-02 1 2014-10-01 2 2014-10-02 1 --- 4 * 3 rows below -- 2014-10-01 2 2014-10-02 1 2015-01-01 4 2015-01-02 3 2014-10-01 2 2014-10-02 1 2015-01-01 4 2015-01-02 3 2014-10-01 2 2014-10-02 1 2015-01-01 4 2015-01-02 3 4 4 4 4