Higher degree polynomial regression results.
|Long term solar activity index||Polynomials
|Max allowable degree||R 2||Max allowable degree||R 2|
|Annual Ap mean||10||0.22||12||0.30|
|Annual Dst mean||10||0.33||16||0.52|
|Annual no. of days with Ap ≥ 40||10||0.43||13||0.58|
|Annual no. of days with Dst ≤ –40||11||0.71||15||0.88|
|Annual mean of daily K-index sum (Penteli)||7||0.26||16||0.58|
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