anchor: Each record in the 1989 CCS contains the date of the observation, the 5-Digit ZIP Code in which the route is located, the route type,20 the number of pieces (by subclass and by shape) per stop, the number of possible deliveries and actual deliveries per stop, and the stop type (single delivery residential, multi-delivery residential, and business-and-mixed).
positive: The 1989 CCS has a lot of data, such as ZIP codes and number of pieces delivered at each stop.
negative: The type of delivery location is not included in the CCS records.