USGS National-Strong Motion Program
Preliminary Corrected Peak Ground Acceleration and Velocity and Pseudo-Spectral Acceleration Values for
September 30, 2004, Parkfield, CA Aftershock (posted 10/01/2004)
Mw 5.0, 09/30/2004, 18:54 UTC, 09/30/2004, 11:54 AM PDT, 35.984 N, 120.550 W, 10.1 km depth, Regional Network ID# nc51149146
Sta	Inst	Inst	State: City; Recorder Location	Owner	Lat	Lon	Dist	Az	Ch	Sensor	Orient	PGA	PGV	PSA at:
Code	type	S/N			deg	deg	km	deg	No	type	deg	cm/s/s	cm/s	0.3 s	1.0 s	3.0 s
PHOB	RF130	9266	CA: Hog Canyon	NCSN	35.8666	-120.4796	14.5	154	1	RF130	360	29.90	-1.540	7.42	1.570	0.1290
									2	RF130	90	-37.60	-1.890	6.10	1.560	0.3400
									3	RF130	UP	31.60	0.993	3.34	1.240	0.1150
1747	Etna	1406	CA: Coalinga; Fire Station 39	USGS	36.137	-120.363	23.9	45	1	FBA-2g	360	24.70	-1.330	6.10	1.280	0.2420
									2	FBA-2g	UP	-10.50	0.691	5.07	0.643	0.0535
									3	FBA-2g	90	21.30	-1.330	5.58	0.948	0.1520
1083	Etna	1429	CA: San Luis Obispo; Rec Center	USGS	35.285	-120.363	79.4	168	1	FBA-2g	360	2.92	-0.149	1.44	0.098	0.0138
									2	FBA-2g	UP	-1.74	0.116	0.48	0.086	0.0095
									3	FBA-2g	90	3.63	0.254	1.31	0.145	0.0112