NEW YORK The March FAS-FAX set off landmines with reports of steep declines at many papers, most prominently some top Tribune Co. properties. The September numbers are not much more encouraging. The Newspaper Association of America said on Monday that overall daily circulation for the six-month period ending September 2005 for 789 newspapers fell 2.6% to 45,153,192 copies. For the 627 papers analyzed, Sunday dropped 3.1% to 49,394,406. Here are some specifics from the new FAS-FAX report -- released at 8 a.m. Monday -- compared to September 2004: The San Francisco Chronicle's daily circ is down 16.5% to 400,906 copies,...