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Table 1 Descriptive statistics for each parameter in each site

From: PM10and gaseous pollutants trends from air quality monitoring networks in Bari province: principal component analysis and absolute principal component scores on a two years and half data set

  Viale Archimede, Bari (urban site) San Nicola sport stadium, Bari (suburban site) Viale King, Bari (urban site)
  Data Mean STD. DEV. Data Mean STD. DEV. Data Mean STD. DEV.
NOx 7456 42.15 41.69 6648 24.65 32.82 7008 61.64 57.88
Benzene 7456 1.49 1.38 6648 1.08 1.48 7008 1.56 1.62
Toluene 7456 4.18 4.07 6648 2.40 4.02 7008 4.97 7.46
CO 7456 0.45 0.35 6648 0.44 0.18 7008 0.58 0.41
PM10 7456 29.71 14.36 6648 31.59 20.26 7008 25.66 16.08
  Altamura, prov. of Bari (urban site) Andria, prov. of Bari (urban site) Monopoli, prov. of Bari (urban site)
  Data Mean STD. DEV. Data Mean STD. DEV. Data Mean STD. DEV.
NOx 5136 46.12 40.08 5568 43.89 42.79 5244 50.65 47.60
Benzene 5136 1.83 1.62 5568 1.66 0.95 5244 1.98 1.06
Toluene 5136 6.74 9.27 5568 4.72 4.47 5244 4.98 4.18
CO 5136 0.43 0.32 5568 0.77 0.73 5244 0.46 0.34
PM10 5136 27.83 20.83 5568 22.00 14.63 5244 36.11 21.91