Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_20667854_1 ( free_float VARCHAR, bse_code VARCHAR )

### Question ###
How many values of free float for the BSE code of 4EH?

### Accurate SQL ###

SELECT COUNT(free_float) FROM table_20667854_1 WHERE bse_code = "4EH"