EQ History from 1998 to time of main shock
 Events are listed from geographic area 45.0999589 45.2999587 119.9332175 120.2665505
 Reference point in table is the mainshock of 199908312303

Distance and Azimuth from reference point to each earthquake
Reference point at Location   45.1863  120.0908

Event_Date___(UT) Depth  Mag  Dist(km)  Az(deg) Site Lat   Site Lon
1998 0812   18:27   8.1  2.8       6.1    111.3  45.1663   120.0185
1999 0321   19:43  22.5  2.9       4.6     98.2  45.1803   120.0323
1999 0327   07:49  27.4  1.9       8.8    329.1  45.2545   120.1487
1999 0327   07:55   0.0  2.0       1.9    151.4  45.1710   120.0790
1999 0728   23:46  17.2  2.1       5.4    109.5  45.1700   120.0257
1999 0831   23:03   3.4  3.2       0.0    338.5  45.1867   120.0910
1999 0831   23:03   3.5  3.5       0.0    321.8  45.1863   120.0908