A composite index comprising number of grocery stores , shopping centres, convenience stores, clothing stores, home specialty stores , pharmacy, specialty stores , sporting goods stores , home improvement and hardware stores , consumer electronics stores , office supply and service stores and Bookstores. (1. Low index value ranges between 0 and 0.02, medium index value ranges between 0.03 and 0.06, high index value ranges between 0.06 and 0.14, very high index value ranges between 0.15 and 1 2. Data is available only for 50 towns. 3. Data is not available for part I & part II of Siliguri separately, hence same data has been put under all parts for these towns.)