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Table 1 Mean values of air pollutants and meteorological conditions at the selected sampling days

From: In vitro toxicity of particulate matter (PM) collected at different sites in the Netherlands is associated with PM composition, size fraction and oxidative potential - the RAPTES project

Site Date PM10-2.5 μm PM2.5-0.18 μm PM0.18 μm PNC O3 NO NO2 Temp RH Wind BG PM10
   (μg/m 3 ) (μg/m 3 ) (μg/m 3 ) (#/cm 3 ) (ppb) (ppb) (ppb) (°C) (%) (m/s) (μg/m 3 )
Farm 05-Jul-07 4.3 6.7 3.8 6700 30 2.99 6.6 17 81 5.3 18
Urban background 02-Jul-07 3.9 6.1 2.0 20600 23 7.39 16 18 81 0.26 15
Steelworks 16-Jul-07 6.0 11 4.5 NA 37 14.1 32 21 84 1.2 27
Harbor 13-Dec-07 6.1 19 5.5 19600 3.9 25.2 24 3.8 90 3.2 24
Continuous traffic 12-Jul-07 15 16 4.4 NA 12 36.5 25 18 79 2.5 26
Truck traffic 26-Jul-07 6.0 14 4.1 42800 4.5 106 30 20 81 3.8 17
Stop & go traffic 24-Jan-08 43 28 13 64700 2.4 41.1 38 11 90 4.8 90
Underground 26-Sep-07 58 38 83* 39300 0.9 14.9 20 18 57 0.00 13
  1. PNC, particle number concentration (median); Temp, temperature; RH, relative humidity; BG, background levels of PM10; NA, not available; * selected day not available, mass concentration estimated based on average values during other sampling days at this site.