CREATE TABLE table_204_426 (id DECIMAL, "year" TEXT, "division" DECIMAL, "league" TEXT, "regular season" TEXT, "playoffs" TEXT, "open cup" TEXT)

how many 3rd place finishes has npsl had ?
SELECT COUNT(*) FROM table_204_426 WHERE "regular season" = '3rd, atlantic'
SELECT COUNT(*) FROM "table_204_426" WHERE "regular season" = '3rd, atlantic'