Table schema:
CREATE TABLE table_name_22 (drop_zone INTEGER, troop_carrier_group VARCHAR)

Question: What is the average drop zone time in the N drop zone for the 1st Pathfinder Prov.?
SQL: SELECT AVG(drop_zone) AS Time FROM table_name_22 WHERE drop_zone = "n" AND troop_carrier_group = "1st pathfinder prov."