<prompt> Translate the following text to EnglishHii ni matokeo ya chanjo ya chini sana asilimia ya anwani kupokea barua katika siku fulani, wiani wa juu wa idadi ya watu na njia nyingine unexplored na kuzingatia topographic.  <response>: This results from a much lower coverage percent of addresses receiving mail on a given day, a higher population density and other unexplored route and topographical considerations. 