CREATE TABLE table_62860 ("Athlete" TEXT, "Class" TEXT, "Horse" TEXT, "Event" TEXT, "Result" TEXT, "Rank" TEXT)

What class had a Championship Test event with a 62.516 result?
SELECT "Class" FROM table_62860 WHERE "Event" = 'championship test' AND "Result" = '62.516'
SELECT "Class" FROM "table_62860" WHERE "Event" = 'championship test' AND "Result" = '62.516'