CREATE TABLE table_11595 ("Rider" TEXT, "Bike" TEXT, "Laps" FLOAT, "Time" TEXT, "Grid" FLOAT)

What time was there when the bike was Ducati 999 F06 and the grid number was 15?
SELECT "Time" FROM table_11595 WHERE "Bike" = 'ducati 999 f06' AND "Grid" = '15'
SELECT "Time" FROM "table_11595" WHERE "Bike" = 'ducati 999 f06' AND "Grid" = '15'