An insider told the Times there was a "healthy debate" over whether information such as hospital cleanliness ward by ward or street-by-street crime data should be released free or sold.

The ratio of mean tracer concentrations on leeward side to that on wind-ward side was about8 for street canyons where the space between buildings was small.

Japan tobacco, Japan's number one tobacco company, placed the remodeled trailer in the city's central Chiyoda ward, which late last year began fining anyone caught smoking in the street.