BOSTON (Standard&Poor's) Jan. 7, 2010--Standard&Poor's Ratings Services has revised its rating outlook on Westfield, Mass.' general obligation (GO) debt to positive from stable, reflecting the city's improved financial position over the past three fiscal years to what it considers good levels. The 'A-' ratings on the city's general obligation (GO) debt have been affirmed. Standard&Poor's has also assigned its 'SP-1+' short-term rating to Westfield, Mass.' $8.025 million GO bond anticipation notes (BANs). "We expect the city's local economy and strong and diverse tax base to continue to provide stability, and its debt burden, given identified needs, to remain low to moderate," said Standard&Poor's credit analyst Victor Medeiros. "If the city is able