How many teams did they play week 6
{'header': ['Week', 'Date', 'Opponent', 'Result', 'Kickoff [a ]', 'Venue', 'TV', 'Attendance', 'Record'], 'page_title': '', 'page_id': '', 'types': ['real', 'text', 'text', 'text', 'text', 'text', 'text', 'real', 'text'], 'id': '1-11391448-2', 'section_title': '', 'caption': '', 'rows': [['1', 'September 12', 'Houston Oilers', 'L 0–20', '2:00', 'The Astrodome', 'NBC', '42228', '0–1'], ['2', 'September 19', 'San Diego Chargers', 'L 0–23', '1:00', 'Tampa Stadium', 'NBC', '39558', '0–2'], ['3', 'September 26', 'Buffalo Bills', 'L 9–14', '1:00', 'Tampa Stadium', 'NBC', '44505', '0–3'], ['4', 'October 3', 'Baltimore Colts', 'L 17–42', '2:00', 'Memorial Stadium', 'NBC', '40053', '0–4'], ['5', 'October 10', 'Cincinnati Bengals', 'L 0–21', '1:00', 'Riverfront Stadium', 'NBC', '40700', '0–5'], ['6', 'October 17', 'Seattle Seahawks', 'L 10–13', '1:00', 'Tampa Stadium', 'CBS', '43458', '0–6'], ['7', 'October 24', 'Miami Dolphins', 'L 20–23', '4:00', 'Tampa Stadium', 'NBC', '61437', '0–7'], ['8', 'October 31', 'Kansas City Chiefs', 'L 19–28', '1:00', 'Tampa Stadium', 'NBC', '41779', '0–8'], ['9', 'November 7', 'Denver Broncos', 'L 13–48', '4:00', 'Mile High Stadium', 'NBC', '61703', '0–9'], ['10', 'November 14', 'New York Jets', 'L 0–34', '1:00', 'Shea Stadium', 'NBC', '46427', '0–10'], ['11', 'November 21', 'Cleveland Browns', 'L 7–24', '1:00', 'Tampa Stadium', 'NBC', '36930', '0–11'], ['12', 'November 28', 'Oakland Raiders', 'L 16–49', '4:00', 'Oakland-Alameda County Coliseum', 'NBC', '49590', '0–12'], ['13', 'December 5', 'Pittsburgh Steelers', 'L 0–42', '1:00', 'Three Rivers Stadium', 'NBC', '43385', '0–13']], 'name': 'table_11391448_2'}