Table 12-1 gives the price per kilowatt-hour (kWh) that Con Edison charged residential users as well as small and large commercial users for various quantities of electricity consumed in New York City, from June to September and for other months, from 2012 to 2015. Since Con Edison charged different rates for different categories of customers (i.e., residential and commercial) and for different quantities of electricity purchased, it is clear that Con Edison practiced both second- and third-degree price discrimination