( *** / * XZ)
Concentration
Microgram per Cubic Meter
(****/***)
Concentration Microgram per Cubic Meter
300
250
200
150
100
50
100
80
60
40
&
O
10
MONDAY, APRIL 13, 1992
一九九二年三月份空氣質素報告
Hong Kong Air Quality Report for March 1992
Mong Kok 旺角
Respirable Suspended Particu}-
吸入懸浮粒子
Key
Total Suspended Particulata
總懸浮粒子
Sulphur Dioxide
二氧化硫
Nitrogen Dicach.
Chatu
3
5
7
11 13 15
17
19
21 23
25 27 29
31
March 1992
Key
Total Suspended Particulate
Kwai Chung 葵涌
Respirable Suspended Particulate***
總懸浮粒子
Subhur Dioxide
氧化硫
Nitrogen Diande
二氧化氮
1
3
5
7
9
11
13 15
17
19
21
23
25
27
29
31
March 1992
I
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