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Table 9

Correlation coefficient matrix of each impact factor

x1x2x3x4x5x6x7
x1 −0.282 0.360 −0.133 0.261 0.211 0.119 
x2 −0.282 −0.216 0.791 −0.466 −0.439 −0.378 
x3 0.360 −0.216 0.012 0.434 0.418 0.506 
x4 −0.133 0.791 0.012 −0.379 −0.371 −0.331 
x5 0.261 −0.466 0.434 −0.379 0.993 0.969 
x6 0.211 −0.439 0.418 −0.371 0.993 0.979 
x7 0.119 −0.378 0.506 −0.331 0.969 0.979 
x1x2x3x4x5x6x7
x1 −0.282 0.360 −0.133 0.261 0.211 0.119 
x2 −0.282 −0.216 0.791 −0.466 −0.439 −0.378 
x3 0.360 −0.216 0.012 0.434 0.418 0.506 
x4 −0.133 0.791 0.012 −0.379 −0.371 −0.331 
x5 0.261 −0.466 0.434 −0.379 0.993 0.969 
x6 0.211 −0.439 0.418 −0.371 0.993 0.979 
x7 0.119 −0.378 0.506 −0.331 0.969 0.979 
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