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Table 2
Details of correlations between the Ap geomagnetic index and power input to the magnetosphere Pα.
| Years (inclusive) | Averaging interval, τ | Number of samples, N | Overall daily data availability | Ap series averaging | Pα series | Best-fit α | Correlation coefficient, r | Confidence, S (%) (to 3 decimal places) |
|
|---|---|---|---|---|---|---|---|---|---|
| A | 1996–2016 | 1 year | 21 | 98.60% | Coincident data, Apc | 〈Pα〉τ=1yr | 0.46 | 0.9931 | 100.000 |
| B | 1996–2016 | 1 year | 21 | 98.60% | Coincident data, Apc | Pαann | 0.53 | 0.9942 | 100.000 |
| C | 1996–2016 | 1 day | 12198 | 98.60% | Coincident data, Apc | 〈Pα〉τ=1day | 0.46 | 0.9045 | 100.000 |
| D | 1964–2016 | 1 year | 53 | 63.01% | All data, Ap | Pαann | 0.53 | 0.9213 | 99.998 |
| E | 1964–2016 | 1 year | 48 | 63.01% | Coincident data, Apc & years with f < 0.15 discarded | 〈Pα〉τ=1yr, years with f < 0.15 discarded | 0.46 | 0.9932 | 100.000 |
| F | 1964–2016 | 1 year | 48 | 63.01% | Coincident data, Apc & years with f < 0.15 discarded | Pαann, years with f < 0.15 discarded | 0.53 | 0.9962 | 100.000 |
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