. A preliminary solution unsing only 4 stations.
The depth was assumed at 40.6 km.

|         OSU MOMENT TENSOR SOLUTION
|   
|   Event: 990703_0143
|     Date/Time: 99/ 7/ 3  1:43:54
|     Lat./Lon.:   47.080 -123.460
|         mb/Ms:    5.5      5.5
|
|   Depth (km):  40.6    Stations Used:  4
|   Moment Tensor: Scale = 10**24 dyn cm
|     Component  Value    Component  Value
|        Mxx    -0.365       Myy     4.364
|        Mxy    -0.048       Myz     1.034
|        Mxz     1.394       Mzz    -3.999
|   Source Composition:
|     (Type/%)  DC/ 96  CLVD/  4   Iso/  0
|   Principal Axes:
|       Axis     Value    Plunge   Azimuth
|         T      4.493         7        88
|         N      0.090        18       356
|         P     -4.583        71       199
|   Best Fitting Double-Couple:
|       Mo = 4.54E+24 dyn cm     Mw = 5.74
|       Plane   Strike      Rake       Dip
|        NP1       343      -112        55
|        NP2       198       -62        41
|                                              
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|  ##########------------------#############   
|  #########-------------------##########      
|  #########--------------------######### T    
|  #########---------   --------#########      
|  #########--------- P ---------###########   
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|   Lower Hemisphere Equal Area Projection