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	param	t-stat
$ω$	1.3465	6.06
$α$	0.1187	4.40
$β$	0.6949	12.85
$γ_{1}$	0.4156	2.66
$γ_{2}$	-0.6805	-2.50
$γ_{3}$	0.4919	2.26
$γ_{4}$	-0.3010	-1.95
$γ_{5}$	0.2031	1.66
$γ_{6}$	-0.3008	-2.49
$γ_{7}$	0.0045	0.02

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Grifols SA Spline-GARCH Volatility Analysis

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