<prompt> Translate the following text to EnglishKama ilivyoelezwa katika makala ya mwisho ya Clear Skies Act, REMSAD inaonyesha mzunguko wa 36 km x 36 km wa gridi ya Marekani, na inaweza kufanya simulation ya mwaka mzima, na kuzalisha utabiri wa viwango vya PM kwa saa.  <response>: The REMSAD modeling domain selected for the Clear Skies Act consists of 36 km x 36 km grid cells covering the 48-contiguous United States, and REMSAD can perform a full-year simulation, generating predictions of hourly PM concentrations including both PM2. 