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	param	t-stat
$ω$	0.0243	20.84
$α$	0.0731	39.14
$β$	0.9239	520.20
$γ$	0.2779	19.08
$δ$	1.5102	44.14

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Pinnacle West Capital Corp APARCH Volatility Analysis

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Volatility Forecast

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