Milan City PM10 daily & hourly average concentrations
01/12/98
08/12/98
15/12/98
22/12/98
29/12/98
D
a
t
e
0
100
200
300
P
M
1
0
(
m
g
/
m
3
)
-
D
a
i
l
y
A
g
e
r
a
g
e
W
a
r
n
i
n
g
T
h
r
e
s
h
o
l
d
A
l
a
r
m
T
h
r
e
s
h
o
l
d
1
4
/
1
2
/
1
9
9
8
2
0
/
1
2
/
1
9
9
8
14/12/98
15/12/98
16/12/98
17/12/98
18/12/98
19/12/98
20/12/98
D
a
t
e
0
100
200
300
400
P
M
1
0
(
m
g
/
m
3
)
-
H
o
u
r
l
y
A
g
e
r
a
g
e
M
i
l
a
n
C
i
t
y
A
i
r
Q
u
a
l
i
t
y
C
o
n
t
r
o
l
N
e
t
w
o
r
k
-
P
M
1
0
Back to first slide
View graphic version