event     sta  lat        lon        sample    
04100124  1    -67.6337   175.1562   discrete  
04121315  3    -74.3450   175.9667   discrete  
04141015  4    -76.4401   -177.9936  discrete  
04171230  5    -76.4650   169.0565   discrete  
04201115  6    -77.9897   -176.1115  discrete  
04220000  7    -76.4792   -177.9550  discrete  
04240215  10   -76.5037   176.0186   discrete  
04261220  14   -76.5007   168.9694   discrete  
04292200  16   -73.9667   176.1093   discrete  
05040830  18   -67.9806   175.9932   discrete