USGS National-Strong Motion Program
Preliminary Corrected Peak Ground Acceleration and Velocity and Pseudo-Spectral Acceleration Values for
February 18, 2004, Cobb, CA Earthquake (posted 02/18/2004; updated 2/26/2004)
Mw 4.4, 02/18/2004, 20:37 UTC, 02/18/2004, 12:37 PM PST, 38.834 N, 122.765 W, 3.6 km depth, Regional Network ID# nc40153486
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
COB	K2	3432	CA: Cobb	Calpine	38.8391	-122.7531	1.2	61	1	EpiSen	90	213.1	9.0	34.60	3.970	0.2170
									2	EpiSen	360	-140.9	5.1	23.00	1.470	0.1370
									3	EpiSen	UP	109.2	2.3	10.70	0.794	0.1390
ADSP	Etna	3433	CA: Anderson Springs	Calpine	38.7742	-122.7044	8.5	142	1	EpiSen	90	-55.5	1.1	3.95	0.419	0.0288
									2	EpiSen	360	-42.9	-1.4	3.66	0.392	0.0685
									3	EpiSen	UP	25.2	0.5	1.74	0.189	0.0417
1767	K2	1438	CA: Santa Rosa, Fire Station 1	USGS	38.441	-122.701	44.0	173	1	EpiSen	90	1.3	-0.1	0.52	0.106	0.0376
									2	EpiSen	360	1.3	0.1	0.47	0.153	0.0683
									3	EpiSen	UP	-0.5	-0.1	0.14	0.089	0.0390
1829	K2	1448	CA: Sonoma, New Fire Station 1	USGS	38.2903	-122.4613	65.9	156	1	EpiSen	90	0.9	0.1	0.36	0.118	0.0095
									2	EpiSen	360	1.6	0.1	0.51	0.159	0.0094
									3	EpiSen	UP	-0.5	0.0	0.15	0.032	0.0046
1768	K2	1439	CA: Petaluma, Fire Station 1	USGS	38.233	-122.636	67.7	170	1	EpiSen	360	0.6	0.0	0.22	0.020	0.0047
									2	EpiSen	90	-0.9	-0.1	0.40	0.022	0.0033
									3	EpiSen	UP	-0.3	0.0	0.14	0.020	0.0028
1813	K2	1779	CA: Rodeo; Fire Station 75	USGS	38.0344	-122.2702	98.7	154	1	EpiSen	90	0.3	0.0	0.10	0.019	0.0039
									2	EpiSen	360	-0.2	0.0	0.06	0.021	0.0043
									3	EpiSen	UP	-0.1	0.0	0.04	0.014	0.0027