Table 1 Description of LPI samplings in winter (W) and summer (S) 2005, mass concentrations and contribution to PM₁₀ of the ultrafine, fine, intermediate and coarse fractions

Start – stop (dd/mm)

Sampling duration and description

μg.m^-3

%_PM10

μg.m^-3

%_PM10

μg.m^-3

%_PM10

μg.m^-3

%_PM10

W1

11/01–12/01

22 h, 1 day

1.1

5

12.0

51

3.5

15

7.0

30

W2

12/01–14/01

47 h, 2 consecutive days

1.0

6

6.7

37

4.3

24

6.0

33

W3

14/01–17/01

65 h, 3 consecutive days

1.1

4

16.7

62

6.5

24

2.5

9

W4

24/01–03/02

98 h, stopped during 3 rainy days

1.2

7

11.2

63

3.0

17

2.4

14

S1

03/08–05/08

48 h, 2 consecutive days

0.7

5

5.5

36

2.8

18

6.4

41

S2

08/08–11/08

72 h, 3 consecutive days

1.6

12

6.9

50

1.9

14

3.4

25

S3

16/08–18/08

48 h, 2 consecutive days

1.3

9

10.3

70

1.3

9

1.8

12