text: Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
  ### Context:
  CREATE TABLE table_16799784_9 (year_named VARCHAR, longitude VARCHAR)
  ### Question:
  How many years have a longitude measure of 20.0e?
  ### Answer:
  SELECT COUNT(year_named) FROM table_16799784_9 WHERE longitude = "20.0E"