The Polar Cap (PC) index combination, PCC: relations to solar wind properties and global magnetic disturbances | Journal of Space Weather and Space Climate

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Table 5

Correlation coefficients for epoch 1998–2018 (ex. 2003 and 2013). The PCC correlation values are emphasized.

Correlation	PCC	PCN	PCS	PCA¹⁾	PCW²⁾	PCU³⁾
E _M	0.770	0.708	0.725	0.755	0.738	0.697
Kp	0.815	0.758	0.770	0.797	0.795	0.736
ASY-H⁴⁾	0.743	0.702	0.679	0.716	0.700	0.683

¹⁾

Average of PCN and PCS.

²⁾

Selection of winter hemisphere PC indices.

³⁾

Selection of summer hemisphere PC indices.

⁴⁾

Magnetic storm events (1992–2018).

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