Hypocentral Location:

Event ID	21543835
Origin Time	2006/10/20 17:00:08
Latitude	38.8667
Longitude	-122.7873
Depth (TT)	2.5 km
Depth (MT; not authoritative)	3.5 km fixed

Magnitudes:

Md	4.3 (not authoritative)
Mw	4.56 (authoritative)

Principal Axes:

Scale	1.0E+22 Dyne-cm
Axis	Value	Plunge	Azimuth
T	10.545	8.143	310.027
N	-3.689	43.618	47.863
P	-6.856	45.232	211.733

Source Composition:

Type	Percent
DC	30
CLVD	70
Iso	(null)

Moment Tensor (Aki & Richards Convention):

Mo	8.70e+22 Dyne-cm
Mxx	9.444e+21 Dyne-cm
Mxy	-7.572e+22 Dyne-cm
Mxz	2.630e+22 Dyne-cm
Myy	4.056e+22 Dyne-cm
Myz	-6.955e+21 Dyne-cm
Mzz	-5.000e+22 Dyne-cm
Variance Reduction	80%
Version number	5
Solution time	2013/01/09 02:56:29 UTC

Best-fit Double Couple Solution

Plane	Strike	Rake	Dip
NP1	253	-41	66
NP2	2	-150	53

Waveform data (solid line) and synthetic data (dashed line) from the moment tensor inversion: