Table 2 Correlation coefficients, r, and the respective p values for the short-term (periodicities ranging from ~0.50 to ~13.00 years—st) relation between: the sunspot area and neutron monitor count rate (SSA–NC), the sunspot area and potential gradient (SSA–PG), and the neutron monitor count rate and potential gradient (NC–PG)
SSA–NC | SSA–PG | NC–PG | |
|---|---|---|---|
r (p value) | r (p value) | r (p value) | |
X st | −0.6058 (<0.0001) | 0.3922 (<0.0001) | −0.2133 (<0.0001) |
V st | −0.1873 (<0.0001) | 0.1116 (<0.0001) | −0.2212 (<0.0001) |
R st | −0.1555 (<0.0001) | 0.040 (~0.006) | 0.0 (~0.3) |