Earthquake tzai: 02/01/2005 10:28:39 GMT, M=5.1, S20.36 W176.00, 167.9km 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