Given the input data [(1pm, $10), (2pm, $15), (3pm, $15), (4pm, $20), (5pm, $10), (6pm, $20), (7pm, $30), (8pm, $25), (9pm, $25), (10pm, $30), (11pm, $30)].

What will a Storm query compute average price per each 3 hour window return? (sliding, i.e. overlapping window of tuples, moving the window forward 2 hours each time)