CREATE TABLE table_36915 ("Year" FLOAT, "Starts" FLOAT, "Wins" FLOAT, "Top 5" FLOAT, "Top 10" FLOAT, "Poles" FLOAT, "Avg. Start" FLOAT, "Avg. Finish" FLOAT, "Winnings" TEXT, "Position" TEXT)

What is the average year with an average start smaller than 6.3 and fewer than 0 wins?
SELECT AVG("Year") FROM table_36915 WHERE "Avg. Start" < '6.3' AND "Wins" < '0'
SELECT AVG("Year") FROM "table_36915" WHERE "Avg. Start" < '6.3' AND "Wins" < '0'