<prompt> Translate the following text to EnglishKwa hivyo, uwiano wa usambazaji wa makadirio ya WTP kutoka kwa masomo 26 kwa thamani ya faida zinazohusiana na vifo za kupunguzwa kwa viwango vya uchafuzi wa hewa hutegemea sio tu ubora wa masomo yaani, kiwango cha maambukizi.  <response>: The appropriateness of a distribution of WTP estimates from the 26 studies for valuing the mortality-related benefits of reductions in air pollution concentrations therefore depends not only on the quality of the studies i.e. 