CREATE TABLE table_15946 ("Year" FLOAT, "Starts" FLOAT, "Wins" FLOAT, "Top 5" FLOAT, "Top 10" FLOAT, "Poles" FLOAT, "Avg. Start" CLOB, "Avg. Finish" CLOB, "Winnings" CLOB, "Position" CLOB, "Team ( s ) " CLOB)

How many top tens had an average start of 29.4?
SELECT COUNT("Top 10") FROM table_15946 WHERE "Avg. Start" = '29.4'
SELECT COUNT("Top 10") FROM "table_15946" WHERE "Avg. Start" = '29.4'