EQ History from 1997 to time of main shock
 Events are listed from geographic area 45.8332887 46.0332885 121.8998847 122.2332177
 Reference point in table is the mainshock of 9810210525

Distance and Azimuth from reference point to each earthquake
Reference point at Location   45.9403  122.0785

Event_Date___(UT) Depth  Mag  Dist(km)  Az(deg) Site Lat   Site Lon
1997 0731   10:08   6.0  2.1      12.4    237.9  45.8810   122.2138
1998 0425   13:00   5.9  1.3       3.2    336.0  45.9667   122.0953
1998 0426   20:14   7.4  1.0       8.6    345.8  46.0153   122.1057
1998 1021   05:25   9.4  3.1       0.0      0.8  45.9403   122.0785