SELECT "Class" FROM table_62860 WHERE "Event" = 'championship test' AND "Result" = '62.516'
What class had a Championship Test event with a 62.516 result?
CREATE TABLE table_62860 (
    "Athlete" text,
    "Class" text,
    "Horse" text,
    "Event" text,
    "Result" text,
    "Rank" text
)