How long does the coronavirus remain active/infectious in outside air, and how long should you keep likely/suspected contaminated materials outside without touching or inhaling?

13 feet distance: Reports seem to update daily. Currently air travel is listed at 13 feet, while the 6 foot social distancing remains a standard. Outdoors, the particle will be affected by winds and blow in that direction. Virus can live on paper for 24 hrs and some plastic for 72. Remove shoes at door, coming into hime. Leave packages for 24 hours in garage before bringing into home. Wear a mask.