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_203_665 ( id number, "name" text, "municipality" text, "established" number, "tower height\nin meters (ft)" text, "focal plane\nin meters (ft)" text, "current status" text, "current condition" text )

### Question ###
how many towers are at least 18 meters tall ?

### Accurate SQL ###

SELECT COUNT("name") FROM table_203_665 WHERE "tower height\nin meters (ft)" >= 18