Table 2.

Probability of SEP Occurrence Functions per CME type.

CME type Fitted curve Equation Coefficient of determination (R 2)
Halo Polynomial 2nd degree P = −1.910−7 × V 2 + 0.001 × V − 0.4666 1.0
Partial halo Linear regression P = 0.00034 × V − 0.1992 0.9984
Non halo Exponential P = 0.014 exp(0.0027 × V) 0.9928

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