Table 3. Accumulation of particulate matter on leaves of 5 species in the survey sites during May 2019-January 2020, presented as the sum of surface and wax-deposited particulate matter . Data are mean ± SD, n = 10 (4 months with 3 replicates in each)

Species	Total amount of PM(μg/cm2)
	Month				Average
	May.	Aug.	Nov.	Jan.
Q. myrsinaefolia	76.14±29.39a1	49.91±8.86a	69.32±13.14a	75.24±11.58b	67.65
Q. glauca	55.08±8.79b	28.80±4.53b	51.71±9.26b	43.52±6.30c	44.78
Q. salicina	76.90±17.45a	46.02±13.23a	79.30±15.25a	110.44±36.40a	78.17
C. japonica	35.33±14.44c	17.25±6.64c	23.20±8.22c	31.51±9.58c	26.82
Prunus x yedoensis	22.68±7.54c	9.88±3.63c	nd2	nd	16.28
Average for species	55.23	30.37	55.88	65.18	46.74

Values in rows followed by different letters are significantly different (p<0.05).
Not determined in this year.