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. Author manuscript; available in PMC: 2014 Nov 4.
Published in final edited form as: Atmos Environ (1994). 2009 May 1;43(16):2541–2549. doi: 10.1016/j.atmosenv.2009.02.033

Figure 9.

Figure 9

Size distributions of ultrafine particles measured by FMPS at upwind (UW) and downwind (DW) intersections during the pre-sunrise hours in the winter season.