CREATE TABLE table_1063 ("Rank" FLOAT, "Name" TEXT, "Nationality" TEXT, "1st  ( m ) " TEXT, "2nd  ( m ) " TEXT, "Points" TEXT, "Overall NT points" TEXT, "Overall WC points  ( Rank ) " TEXT)

Name the number of overall nt points for 248.9
SELECT COUNT("Overall NT points") FROM table_1063 WHERE "Points" = '248.9'
SELECT COUNT("Overall NT points") FROM "table_1063" WHERE "Points" = '248.9'