<prompt> Translate the following text to EnglishIngawa kuna tofauti kadhaa kati ya mazingira ya hatari ya utafiti wa soko la kazi, ambayo tunatumia kupata takwimu ya VSL, na mazingira ya uchafuzi wa hewa ya chembechembe, tofauti hizo katika idadi ya watu walioathirika na asili ya hatari zinaonyesha marekebisho ya juu na chini.  <response>: While there are several differences between the risk context implicit in labor market studies we use to derive a VSL estimate and the particulate matter air pollution context addressed here, those differences in the affected populations and the nature of the risks imply both upward and downward adjustments. 