Earthquake pyal: 10/23/2004 08:56:00 GMT, M=6.6, N37.23 E138.75, 16km 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