Table schema:
CREATE TABLE table_name_53 (agricultural_panel INTEGER, national_university_of_ireland VARCHAR, labour_panel VARCHAR, total VARCHAR)

Question: What is the average agricultural panel value with a Labour panel less than 1, a total value less than 21, and a National University of Ireland value greater than 0?
SQL: SELECT AVG(agricultural_panel) FROM table_name_53 WHERE labour_panel < 1 AND total < 21 AND national_university_of_ireland > 0