LEGENDA
Concentrazione [ µg/m
3
]
PM
10
PM
2.5
PM
1
0-25
0-10
0-5
25-50
10-20
5-10
50-75
20-30
10-15
75-100
30-40
15-20
100-125
40-50
20-25
125-150
50-60
25-30
150-175
60-70
30-35
175-200
70-80
35-40
>200
>80
>40
dato non valido