CREATE TABLE table_61900 ("Year" FLOAT, "Edition" TEXT, "Round" TEXT, "Date" TEXT, "Location" TEXT, "Surface" TEXT, "Against" TEXT, "Opponent ( s ) " TEXT, "Score" TEXT, "Result" TEXT)

Which Year has a Date of 5 6 february?
SELECT AVG("Year") FROM table_61900 WHERE "Date" = '5–6 february'
SELECT AVG("Year") FROM "table_61900" WHERE "Date" = '5–6 february'