EQ History from 1998 to time of main shock
 Events are listed from geographic area 47.2666230 47.4666228 122.2332206 122.5665536
 Reference point in table is the mainshock of 9907020522

Distance and Azimuth from reference point to each earthquake
Reference point at Location   47.3710  122.4043

Event_Date___(UT) Depth  Mag  Dist(km)  Az(deg) Site Lat   Site Lon
1998 0110   19:24  16.8  1.4       4.7    137.9  47.3393   122.3622
1998 0607   09:34  17.5  2.2      11.3    309.3  47.4353   122.5203
1998 0630   07:19  17.6  1.1       4.2    122.3  47.3507   122.3570
1998 0821   10:09  20.9  1.7       7.1    113.7  47.3452   122.3180
1998 0920   10:25   6.4  1.1       6.8    111.8  47.3482   122.3205
1998 0928   05:45  19.1  1.7       4.5     54.6  47.3943   122.3558
1998 0930   19:04  16.4  1.7      15.1    123.9  47.2953   122.2390
1998 0930   20:51  14.4  1.5      15.1    122.1  47.2988   122.2355
1999 0317   18:57  25.5  1.0       6.1    141.7  47.3282   122.3545
1999 0320   13:40   1.6  1.1       6.6    142.0  47.3242   122.3505
1999 0609   18:29  24.7  1.6       6.8    159.1  47.3140   122.3723
1999 0702   05:22  24.7  3.0       0.0    270.0  47.3710   122.4043