CREATE TABLE table_5423 ("Season" TEXT, "Total TD's" FLOAT, "Total TC's" FLOAT, "Total STC's" FLOAT, "Strongest storm" TEXT)

What is the total number of TD's of the Gavin storm with a total STC's smaller than 6?
SELECT COUNT("Total TD's") FROM table_5423 WHERE "Strongest storm" = 'gavin' AND "Total STC's" < '6'
SELECT COUNT("Total TD's") FROM "table_5423" WHERE "Strongest storm" = 'gavin' AND "Total STC's" < '6'