CREATE TABLE table_16522 ("Team" TEXT, "Stadium" TEXT, "Capacity" FLOAT, "Highest" FLOAT, "Lowest" FLOAT, "Average" FLOAT)

What is the highest attendance at a game played by St. Johnstone?
SELECT MAX("Highest") FROM table_16522 WHERE "Team" = 'St. Johnstone'
SELECT MAX("Highest") FROM "table_16522" WHERE "Team" = 'St. Johnstone'