Briquette shape type

Principal component

Communality Extracted Value R²

PCA1

PCA2

PCA3

Doughnut**

0.778

0.169

−0.124

0.418

Honeycomb**

0.639

0.014

0.164

0.562

Stick⁺⁺

−0.456

0.437

−0.033

0.642

Cylindrical⁺⁺

0.169

0.764

−0.165

0.458

Hexagonal⁺⁺

0.011

0.752

0.179

0.621

Spherical ^##

−0.054

0.092

0.806

0.641

Pillow^##

0.091

−0.064

0.728

0.582

Correlation

PC1 & PC2

−0.031

PC1 & PC3

0.11

PC2 & PC3

−0.058

−