EQ History from 2010 to time of main shock
 Events are listed from geographic area 47.3666215 47.5666213 121.8998847 122.2332177
 Reference point in table is the mainshock of 201109222022

Distance and Azimuth from reference point to
 each earthquake
Reference point at Location   47.4500  122.0820

Event_Date___(UT) Depth  Mag  Dist(km)  Az(deg)
 Site Lat   Site Lon
2010 0224   19:37   2.7  1.4       4.9     38.6  47.4845   122.0413
2010 0609   21:29   7.5  1.1      11.5     37.2  47.5325   121.9893
2010 0625   12:02   9.3  1.8      13.5     53.9  47.5215   121.9373
2010 0703   07:19   2.4  1.6      13.1     36.5  47.5448   121.9782
2010 0806   07:54  26.6  1.0       0.5     43.5  47.4533   122.0773
2010 0904   04:52   0.0  2.4       7.0     58.8  47.4827   122.0023
2010 1027   17:12  24.3  1.6       2.3    172.8  47.4293   122.0782
2010 1204   17:00   7.4  1.4       1.2    110.6  47.4462   122.0670
2011 0327   01:19  17.9  1.9       5.8    149.0  47.4053   122.0425
2011 0514   15:02  17.0  1.2       4.2    172.8  47.4123   122.0750
2011 0705   10:08  20.8  1.4      13.5     76.1  47.4790   121.9085
2011 0802   09:50   0.0  1.0       8.3     97.1  47.4408   121.9735
2011 0818   07:49   8.8  2.8       5.3     52.3  47.4790   122.0267
2011 0831   19:05  20.2  1.8       1.5    153.6  47.4382   122.0733
2011 0922   20:22  24.6  3.2       0.0     64.3  47.4502   122.0815