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G. Egarch and G. Student-t, ) (0.0009) (0.0011) (0.0004) (0.0002) (0.000000593) (0.0019) (0.0000008) (0.0004) ? 1 0, Table 12: Conditional volatility models parameter estimates -OMEL electricity spot market (-) (0.0024) (0.0003) (-) (12.7295) (0.000317) (-) (0.0557) (0.0003) Log-L 12413