Figure 6
The figure shows four line graphs arranged in a vertical series. The horizontal axis in all the graphs is labeled “Lag (months)” and ranges from 1 to 4 in increments of 0.5 units. Each graph shows two lines: a solid line and a dashed horizontal line. A legend in each graph shows that the solid line represents “p-value” and the dashed line represents “Significance Level (0.05)”. The top graph is labeled “Granger Causality Test (Ship underscore Count – Containers) — Hamad Port”. The vertical axis is labeled “p-value” and ranges from 0.0 to 0.8 in increments of 0.1 units. The p-value line begins at about 0.8 at lag 1, decreases to about 0.50 at lag 2, rises to about 0.7 at lag 3, and ends at about 0.3 at lag 4. The dashed line remains constant at 0.05. The second graph is labeled “Granger Causality Test (Ship underscore Count – Containers) — Jeddah Port”. The vertical axis is labeled “p-value” and ranges from 0.2 to 0.8 in increments of 0.2 units. The p-value line begins at above 0.9 at lag 1, decreases to about 0.7 at lag 2, rises slightly to about 0.8 at lag 3, and ends at about 0.78 at lag 4. The dashed line remains constant at 0.05. The third graph is labeled “Granger Causality Test (Ship underscore Count – Containers) — Salalah Port”. The vertical axis is labeled “p-value” and ranges from 0.02 to 0.10 in increments of 0.2 units. The p-value line begins at about 0.008 at lag 1, increases to about 0.045 at lag 2, further increases to about 0.084 at lag 3, and ends above 0.10 at lag 4. The dashed line remains constant at 0.05. The bottom graph is labeled “Granger Causality Test (Ship underscore Count – Containers) — Shuwaikh Port”. The vertical axis is labeled “p-value” and ranges from 0.0 to 0.8 in increments of 0.1 units. The p-value line begins at about 0.82 at lag 1, decreases to about 0.68 at lag 2, decreases to about 0.55 at lag 3, and ends at about 0.65 at lag 4. The dashed line remains constant at 0.05. Note: All numerical data values are approximated.Granger causality test results: Ship_Count → containers