Hypocentral Location:

Event ID	21430438
Origin Time	2004/12/27 10:36:23
Latitude	38.7492
Longitude	-122.7263
Depth (TT)	2.9 km
Depth (MT; not authoritative)	3.5 km fixed

Magnitudes:

Md	4.15 (not authoritative)
Ml	4.32 (not authoritative)
Mw	4.31 (authoritative)

Principal Axes:

Scale	1.0E+22 Dyne-cm
Axis	Value	Plunge	Azimuth
T	3.823	20.983	183.157
N	-0.422	18.866	280.688
P	-3.401	61.153	49.030

Source Composition:

Type	Percent
DC	78
CLVD	22
Iso	(null)

Moment Tensor (Aki & Richards Convention):

Mo	3.61e+22 Dyne-cm
Mxx	2.970e+22 Dyne-cm
Mxy	-1.398e+21 Dyne-cm
Mxz	-2.243e+22 Dyne-cm
Myy	-8.063e+21 Dyne-cm
Myz	-1.029e+22 Dyne-cm
Mzz	-2.163e+22 Dyne-cm
Variance Reduction	63%
Version number	5
Solution time	2015/10/03 04:45:52 UTC

Best-fit Double Couple Solution

Plane	Strike	Rake	Dip
NP1	108	-70	69
NP2	243	-131	29

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