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_24518475_1 ( depth VARCHAR, time__utc_ VARCHAR )

### Question ###
What is the depth of the aftershock at 18:00:22?

### Accurate SQL ###

SELECT depth FROM table_24518475_1 WHERE time__utc_ = "18:00:22"