What is the average number of floors at 170 Fourth Avenue North?
CREATE TABLE table_68777 (
    "Name" text,
    "Street Address" text,
    "Years as tallest" text,
    "Height ft / m" text,
    "Floors" real
)
SELECT AVG("Floors") FROM table_68777 WHERE "Street Address" = '170 fourth avenue north'
Below are sql tables schemas paired with instruction that describes a task. Using valid SQLite, write a response that appropriately completes the request for the provided tables. ### Instruction: What is the average number of floors at 170 Fourth Avenue North? ### Input: CREATE TABLE table_68777 (
    "Name" text,
    "Street Address" text,
    "Years as tallest" text,
    "Height ft / m" text,
    "Floors" real
) ### Response: SELECT AVG("Floors") FROM table_68777 WHERE "Street Address" = '170 fourth avenue north'