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Table 2 Exogenous variables and abbreviations

From: Statistical detection of the influence of solar activities to weak earthquakes

B IMF Magnitude (nT)
T Proton Temperature (K)
D Proton Density (n/cc)
V Solar Wind Speed (km/s)
P Dynamic Pressure (nPa)
Ey Earth Electric Field (mV/m)
SSN Sun Spot Number (n)
DST Disturbance Storm Time index (nT)
PCI Polar Cap Index