Table 2: Saharan dust and concentrations, in g/m3, during the period of the Saharan intrusion of June 2006, for the six sampling sites (“—” indicates a contribution below the minimum detection limit).

Firenze Capannori Grosseto   Saharan  dust Saharan dust Saharan dust 18/06/2006 2 22 2 24 — 18 19/06/2006 6 30 4 32 3 24 20/06/2006 14 42 9 38 5 27 21/06/2006 19 46 12 44 15 40 22/06/2006 23 56 14 48 22 51 23/06/2006 10 41 9 42 14 42 24/06/2006 8 42 6 45 3 31 25/06/2006 8 41 7 46 5 32 26/06/2006 12 44 8 40 9 37 27/06/2006 13 50 14 49 11 44 28/06/2006 21 57 17 51 18 50 Arezzo Prato Livorno Saharan  dust Saharan  dust Saharan  dust 30/06/2006 8 36 11 44 19 50 01/07/2006 4 15 2 25 6 40 02/07/2006 — 11 — 15 2 31