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_21415 ( "Departure" text, "Going to" text, "Calling at" text, "Arrival" text, "Operator" text )

### Question ###
Name the number of going to for thurlby, braceborough spa at departure being 16.50

### Accurate SQL ###

SELECT COUNT("Going to") FROM table_21415 WHERE "Calling at" = 'Thurlby, Braceborough Spa' AND "Departure" = '16.50'