<prompt> Translate the following text to SwahiliPerfect visibility is represented by a deciview of zero, so a decrease in deciview is an increase or improvement in visibility.  <response>: Uwezo kamili wa kuona unawakilishwa na deciview ya sifuri, kwa hivyo kupungua kwa deciview ni ongezeko au uboreshaji wa mwonekano. 