Hypocentral Location:

Event ID	21516950
Origin Time	2006/05/12 10:37:29
Latitude	38.8172
Longitude	-122.8138
Depth (TT)	3.6 km
Depth (MT; not authoritative)	5 km fixed

Magnitudes:

Md	4.21 (not authoritative)
Ml	4.33 (not authoritative)
Mw	4.71 (authoritative)

Principal Axes:

Scale	1.0E+23 Dyne-cm
Axis	Value	Plunge	Azimuth
T	1.739	8.429	106.221
N	-0.572	19.430	199.218
P	-1.167	68.684	353.902

Source Composition:

Type	Percent
DC	34
CLVD	66
Iso	(null)

Moment Tensor (Aki & Richards Convention):

Mo	1.45e+23 Dyne-cm
Mxx	-4.733e+22 Dyne-cm
Mxy	-5.983e+22 Dyne-cm
Mxz	-2.941e+22 Dyne-cm
Myy	1.512e+23 Dyne-cm
Myz	3.432e+22 Dyne-cm
Mzz	-1.039e+23 Dyne-cm
Variance Reduction	82%
Version number	4
Solution time	2013/08/19 04:00:21 UTC

Best-fit Double Couple Solution

Plane	Strike	Rake	Dip
NP1	33	-66	56
NP2	175	-121	40

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