... Efficiency: 82lm/WC.T. (Warm White): 3000-4500KPower Factor: 90%C.T. (Pure White): 4500-6000KLuminous Flux: 860-946lmC.T. Cool ... , Restaurant, Hotel, Lobbies, Boutiques...B. 3000K, for Libraries, Offices, Stores...C. 4100K, for Showroom, Bookstores...D. 5000K, for Museums, Jewelery stores ...