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Table 5 Matrix of correlation coefficients of the three sources obtained by APCS sources profiles

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

  Mixed source
  Altamura Andria Monopoli Archimede King San Nicola
Altamura 1.00 0.07 -0.04 0.25 -0.44 0.35
Andria   1.00 -0.32 -0.02 0.44 -0.23
Monopoli    1.00 -0.06 0.05 0.32
Archimede     1.00 -0.19 0.25
King      1.00 -0.26
San Nicola       1.00
  Particulate
  Altamura Andria Monopoli Archimede King San Nicola
Altamura 1.00 0.65 -0.12 0.39 0.59 -0.12
Andria   1.00 0.10 0.56 0.71 0.13
Monopoli    1.00 0.54 0.05 0.24
Archimede     1.00 0.51 0.09
King      1.00 -0.01
San Nicola       1.00
  Vehicular traffic
  Altamura Andria Monopoli Archimede King San Nicola
Altamura 1.00 0.03 0.16 0.06 -0.07 -0.17
Andria   1.00 -0.29 0.36 0.33 0.19
Monopoli    1.00 -0.12 0.60 0.20
Archimede     1.00 0.51 0.46
King      1.00 0.72
San Nicola       1.00
  1. Values higher than 0.5 are highlighted in bold text.