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Table 3 Correlation coefficients for the trend of concentrations of analyzed elements present in PM 2.5

From: Deep investigation on inorganic fraction of atmospheric PM in Mediterranean area by neutron and photon activation analysis

As Au Ba Br Ce Co Cr Cs Fe Hf Hg La Mo Rb Sb Sc Se Sm Th W Zn  
  0.25 -0.80 0.85 0.37 0.85 0.65 0.50 0.80 0.51 -0.35 0.70 0.50 0.39 0.83 0.40 0.80 0.55 0.20 -0.19 0.37 As
   -0.97 0.58 0.51 0.35 0.06 0.54 0.33 0.73 0.35 0.01 0.10 0.77 0.48 0.01 0.56 0.08 -0.32 -0.19 0.16 Au
    -0.97 -1.00 -0.98 -0.95 -0.89 -0.65 -1.00 -0.43 -0.81 -0.91 -1.00 -0.99 0.62 -0.94 -0.98 -0.98 -0.11 -0.65 Ba
     0.61 0.87 0.54 0.57 0.83 0.86 -0.22 0.57 0.23 0.68 0.95 0.35 0.89 0.50 0.16 -0.17 0.58 Br
      0.51 0.39 0.29 0.46 0.59 0.15 0.41 0.15 0.77 0.64 0.05 0.66 0.10 -0.32 -0.14 0.50 Ce
       0.69 0.53 0.81 0.63 -0.22 0.72 0.24 0.78 0.90 0.35 0.86 0.53 0.25 0.10 0.60 Co
        0.09 0.67 -0.13 -0.34 0.66 0.43 0.45 0.61 0.29 0.71 0.45 0.04 -0.24 0.44 Cr
         0.44 0.83 0.15 0.47 0.19 0.72 0.60 0.13 0.43 0.19 0.18 -0.20 0.05 Cs
          0.39 -0.38 0.73 0.14 0.57 0.85 0.65 0.79 0.72 0.27 -0.29 0.50 Fe
           0.56 0.13 0.48 -0.05 0.82 0.26 0.73 0.46 0.26 0.01 0.55 Hf
            -0.34 -0.16 0.22 -0.17 -0.41 -0.21 -0.40 -0.37 -0.03 -0.04 Hg
             0.30 0.49 0.64 0.42 0.60 0.55 0.41 -0.15 0.26 La
              0.36 0.27 -0.07 0.40 0.12 -0.31 -0.21 0.03 Mo
               0.79 -0.34 0.76 -0.29 -0.57 -0.02 0.37 Rb
                0.41 0.87 0.53 0.15 -0.13 0.68 Sb
                 0.24 0.89 0.47 -0.11 0.44 Sc
                  0.44 -0.06 -0.28 0.53 Se
                   0.39 -0.09 0.50 Sm
                    0.24 0.17 Th
                     0.07 W
                      Zn