Open Access

Table 3

Parameters for DstEQ calculations.

Symbol Fldst. PCC Test bed Optimal all Unit
Fast decay, τ1 5.8 6.5 5.5 h
Slow decay, τ2 8.2 7.0 7.0 h
DstX level −55 −70 −52 nT
Dst gradient −4.6 −4.5 −4.5 (nT/h)/(mV/m)
PCClim 5.0 5.0 mV/m
PCCslope, Seff 0.40 0.60
Delay DstEQ–Dst 0 45 45 min

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