GARCH without ΔPC	GARCH with ΔPC
β0	0.00001**	0.00002**
β1	0.31714**	0.32168**
β2	0.30262**	0.20205*
ρ	-----	-0.00021*
SD of dep. variable	0.00662	0.00662
Adj. R-squared	0.12177	0.13913
AIC	-7.52012	-7.55288
SSR	0.00904	0.00886