(OBJECT ht 
    () 
    (rel 
        (tuple 
            (
                (secid int) 
                (part int) 
                (dir int) 
                (jamspeed mreal) 
                (jamcars mint)))) 
    (
        (5 1 1 
            (
                (
                    ("2007-01-01" "2007-01-02" TRUE FALSE) 
                    (0.0 0.0 0.00030082 FALSE))) 
            (
                (
                    ("2007-01-01" "2007-01-02" TRUE FALSE) 
                    2)))))