<prompt> Translate the following text to SwahiliWith regard to possible sources of downward bias, it is of note that the recent studies suggest that the single day time series studies may understate the short-term effect on the order of a factor of two.  <response>: Kwa upande mwingine, kwa sababu ya upendeleo wa chini, ni muhimu kutambua kwamba masomo ya hivi karibuni yanaonyesha kwamba masomo ya mfululizo wa wakati wa siku moja yanaweza kupunguza athari ya muda mfupi kwa utaratibu wa sababu ya mbili. 