We caution you not to put too much emphasis on just one month's rating. Street cleanliness is affected by the rate and amount of littering, the degree of compliance with Alternate Side Parking regulations and the incidence of Health and Administrative Code violations, as well as by weather and other seasonal factors. We cannot always be sure to what extent these conditions change from month to month, nor the degree to which they affect Scorecard ratings. The level of street cleanliness is only partially the result of the work of the Department of Sanitation. The most effective way we have found to assess trends in cleanliness is to compare figures for several consecutive months to those for the same months in the prior year.