CREATE TABLE table_6279 ("Runs" FLOAT, "Match" FLOAT, "City/Country" TEXT, "Venue" TEXT, "Year" FLOAT)

Which Runs is the highest one that has a Match larger than 63, and a Venue of national stadium, karachi, and a Year smaller than 1996?
SELECT MAX("Runs") FROM table_6279 WHERE "Match" > '63' AND "Venue" = 'national stadium, karachi' AND "Year" < '1996'
SELECT MAX("Runs") FROM "table_6279" WHERE "Match" > '63' AND "Venue" = 'national stadium, karachi' AND "Year" < '1996'