Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_13619027_9 (high_rebounds VARCHAR, date VARCHAR)
### Question:
How many different values if the number is high rebounds can be found for the game on March 13?
### Answer:
SELECT COUNT(high_rebounds) FROM table_13619027_9 WHERE date = "March 13"