Hypocentral Location:

Event ID	21006582
Origin Time	1999/04/04 06:00:37
Latitude	38.8428
Longitude	-122.7573
Depth (TT)	2.8 km
Depth (MT; not authoritative)	3.5 km fixed

Magnitudes:

Md	3.72 (not authoritative)
Ml	3.82 (not authoritative)
Mw	3.96 (authoritative)

Principal Axes:

Scale	1.0E+21 Dyne-cm
Axis	Value	Plunge	Azimuth
T	9.263	25.719	122.871
N	2.897	23.040	224.692
P	-12.160	54.241	350.891

Source Composition:

Type	Percent
DC	52
CLVD	48
Iso	(null)

Moment Tensor (Aki & Richards Convention):

Mo	1.07e+22 Dyne-cm
Mxx	-5.940e+20 Dyne-cm
Mxy	-1.552e+21 Dyne-cm
Mxz	-8.401e+21 Dyne-cm
Myy	6.413e+21 Dyne-cm
Myz	3.221e+21 Dyne-cm
Mzz	-5.819e+21 Dyne-cm
Variance Reduction	50%
Version number	13
Solution time	2011/07/19 18:34:47 UTC

Best-fit Double Couple Solution

Plane	Strike	Rake	Dip
NP1	51	-66	75
NP2	172	-146	28

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