Table 2.

Estimated intrinsic dimension results for different groups of ARs in the form of mean ± standard deviation. The complex ARs have higher intrinsic dimension within the sunspots than the simple ARs but lower intrinsic dimension within the magnetic fragments.

α β βγ βγδ All
Sunspots k-NN, pooled 3.9 ± 1.2 4.4 ± 1.0 4.4 ± 0.9 4.5 ± 0.7 4.3 ± 1.0
Sunspots k-NN, means 4.0 ± 1.0 4.8 ± 1.2 4.4 ± 0.6 4.4 ± 0.4 4.5 ± 1.0
Sunspots PCA 97% 3.7 ± 0.8 4.4 ± 0.9 4.3 ± 0.6 4.2 ± 0.5 4.3 ± 0.8
Sunspots PCA 98% 4.5 ± 0.9 5.2 ± 1.0 5.1 ± 0.8 5.0 ± 0.5 5.0 ± 0.9
Fragments k-NN, pooled 8.0 ± 1.1 8.0 ± 1.2 7.7 ± 1.2 7.6 ± 1.2 8.0 ± 1.2
Fragments k-NN, means 8.0 ± 0.4 7.9 ± 0.5 7.6 ± 0.5 7.6 ± 0.5 7.8 ± 0.5
Fragments PCA 97% 7.7 ± 1.6 7.1 ± 1.2 6.2 ± 1.2 6.2 ± 1.3 6.8 ± 1.4
Fragments PCA 98% 9.1 ± 1.6 8.5 ± 1.3 7.5 ± 1.2 7.4 ± 1.3 8.1 ± 1.4

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