CREATE TABLE table_3094 ("Season" TEXT, "Series" TEXT, "Team" TEXT, "Races" FLOAT, "Wins" FLOAT, "Poles" FLOAT, "F/Laps" FLOAT, "Podiums" FLOAT, "Points" TEXT, "Position" TEXT)

Name the number of season for 18th position
SELECT COUNT("Season") FROM table_3094 WHERE "Position" = '18th'
SELECT COUNT("Season") FROM "table_3094" WHERE "Position" = '18th'