How many different values if the number is high rebounds can be found for the game on March 13?
CREATE TABLE table_13619027_9 (
    high_rebounds VARCHAR,
    date VARCHAR
)
SELECT COUNT(high_rebounds) FROM table_13619027_9 WHERE date = "March 13"
Below are sql tables schemas paired with instruction that describes a task. Using valid SQLite, write a response that appropriately completes the request for the provided tables. ### Instruction: How many different values if the number is high rebounds can be found for the game on March 13? ### Input: CREATE TABLE table_13619027_9 (
    high_rebounds VARCHAR,
    date VARCHAR
) ### Response: SELECT COUNT(high_rebounds) FROM table_13619027_9 WHERE date = "March 13"