SAS给出了参数估计如下表

PARM	VALUE	STDERR	T	P
LEVEL Smoothing Weight	0.82334	0.0715	11.5227	<.0001
SEASONAL Smoothing Weight	0.001	0.2319	0.004311	0.9966
Residual Variance (sigma squared)	0.01545	.	.	.
Smoothed Level	3.23544	.	.	.
Smoothed Seasonal Factor 1	-0.11329	.	.	.
Smoothed Seasonal Factor 2	-0.10216	.	.	.
Smoothed Seasonal Factor 3	-0.05326	.	.	.
Smoothed Seasonal Factor 4	-0.13771	.	.	.
Smoothed Seasonal Factor 5	-0.09438	.	.	.
Smoothed Seasonal Factor 6	-0.06882	.	.	.
Smoothed Seasonal Factor 7	0.15448	.	.	.
Smoothed Seasonal Factor 8	0.15577	.	.	.
Smoothed Seasonal Factor 9	0.18701	.	.	.
Smoothed Seasonal Factor 10	0.12577	.	.	.
Smoothed Seasonal Factor 11	0.00577	.	.	.
Smoothed Seasonal Factor 12	-0.05921	.	.	.

哪位好心人能帮忙写出Y(t)的表达式，先谢谢了.