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_name_93 (time VARCHAR, bike VARCHAR, grid VARCHAR)

### Question ###
What time was there when the bike was Ducati 999 F06 and the grid number was 15?

### Accurate SQL ###

SELECT time FROM table_name_93 WHERE bike = "ducati 999 f06" AND grid = 15