Earthquake sqan: 12/29/2004 06:05:21 GMT, M=5.5, N8.87 E93.14, 60.0km depth, Bias: pga=0.00 pgv=0.00 Seismic Stations Explanation of Flags M - Manually flagged T - Outlier G - Amplitude off scale or below noise I - Incomplete data N - Not in list of known stations