Subway riders who rely on the Canarsie L Line, which connects the Canarsie section of Brooklyn and the Chelsea section in Manhattan, have graded the line a C. 42,000 cards were handed out to riders over a three-day period in August. During the reply period, more than 4,000 report cards were received, 2,762 via regular mail and another 1,241 cards were filed via the Internet. Riders were asked to grade the line on 21 separate service attributes, including "Minimal delays during rush hour," "Sense of security in stations" and "Availability of MetroCard machines."