X₁

X₂

X₃

X₄

X₅

X₆

Average value

Guangzhou

0.617

0.634

0.742

0.716

0.672

0.630

0.668

Shenzhen

0.678

0.790

0.673

0.752

0.649

0.611

0.692

Zhuhai

0.781

0.744

0.609

0.697

0.710

0.677

0.703

Dongguan

0.629

0.610

0.601

0.616

0.612

0.749

0.636

Huizhou

0.733

0.720

0.644

0.785

0.715

0.767

0.727

Shanghai

0.685

0.703

0.641

0.822

0.757

0.645

0.709

Nantong

0.689

0.682

0.719

0.603

0.640

0.619

0.659

Suzhou

0.861

0.866

0.682

0.819

0.606

0.956

0.798

Zhenjiang

0.828

0.648

0.870

0.665

0.737

0.765

0.752

Nanjing

0.704

0.636

0.718

0.821

0.730

0.663

0.712

Ningbo

0.687

0.640

0.685

0.734

0.941

0.565

0.709

Zhoushan

0.920

0.746

0.614

0.929

0.855

0.701

0.794

Wenzhou

0.939

0.598

0.920

0.977

0.605

0.797

0.806

Average value

0.750

0.694

0.701

0.764

0.710

0.703

0.720