Table 1 Pearson correlation coefficients between network indicators and port capacity.

From: Modular gateway-ness connectivity and structural core organization in maritime network science

Network indicators

GLSN

Port communities

  

C1

C2

C3

C4

C5

C6

C7

B

0.76**

0.84**

0.91**

0.91**

0.92**

0.80**

0.92**

0.87**

Z

0.50**

0.49**

0.52**

0.59**

0.64**

0.60*

0.55**

0.70**

P

0.38**

0.58**

0.46**

0.52**

0.54**

0.16

0.34**

0.56**

K

0.77**

0.78**

0.84**

0.81**

0.90**

0.99**

0.86**

0.84**

BC

0.68**

0.56**

0.84**

0.83**

0.91**

0.89**

0.89**

0.77**

φ

0.62**

0.79**

0.80**

0.66**

0.69**

1.00**

0.71**

0.83**

ρC

0.26**

0.65**

0.58**

0.14

0.28*

0.99**

0.25*

0.62**

ρCM

0.58**

0.79**

0.81**

0.59**

0.66**

0.99**

0.67**

0.84**

  1. Note: Network indicators B, Z, P, K, and BC denote gateway-ness, provincial-ness, connector-ness, degree, and betweenness centrality, respectively; φ, the unnormalized rich-club coefficient originally proposed in reference43; ρC and ρCM, two normalized versions of the rich-club coefficient proposed in reference44 and in reference45, respectively. Pearson correlation coefficients between network indicators and port capacity are calculated for all ports in the GLSN, as well as separately for ports in individual communities (i.e., C1, C2, C3, C4, C5, C6, C7). C5 is the smallest module that consists of a few ports with similar degree and capacity (and cannot be further divided into submodules).
  2. **p-value < 0.001, *p-value < 0.01.
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