CREATE TABLE table_25566 ("R" FLOAT, "Player" TEXT, "Position" TEXT, "League" FLOAT, "Champions League" FLOAT, "Copa del Rey" FLOAT, "Total" FLOAT)

If the total is 6, what is the maximum R?
SELECT MAX("R") FROM table_25566 WHERE "Total" = '6'
SELECT MAX("R") FROM "table_25566" WHERE "Total" = '6'