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. Author manuscript; available in PMC: 2016 Jan 1.
Published in final edited form as: Atmos Environ (1994). 2015 Jan 1;100:159–166. doi: 10.1016/j.atmosenv.2014.10.058

Figure 4.

Figure 4

Monthly variation of S/SS ratios at the sites with land-use type as forest. Bottom axis are the initials of the months from January to December in a chronological order.