CREATE TABLE table_56039 ("Date" TEXT, "Venue" TEXT, "Visitor" TEXT, "Score" TEXT, "Home" TEXT, "Decision" TEXT, "Attendance" FLOAT, "Series" TEXT)

Name the most that attendend when the venue was td banknorth garden and the series of montreal leads 3-1
SELECT MAX("Attendance") FROM table_56039 WHERE "Venue" = 'td banknorth garden' AND "Series" = 'montreal leads 3-1'
SELECT MAX("Attendance") FROM "table_56039" WHERE "Series" = 'montreal leads 3-1' AND "Venue" = 'td banknorth garden'