<prompt> Translate the following text to SwahiliA dollar value was derived for each type of URS, using mid-range estimates of WTP IEc, 1994 to avoid each symptom in the cluster and assuming WTPs are additive.  <response>: Kwa kila aina ya URS, thamani ya dola ilitokana na kutumia makadirio ya kati ya WTP IEc, 1994 ili kuepuka kila dalili katika kundi na kudhani WTP ni nyongeza. 