The following list of examples will be restricted to the strongest data. That is,
data recorded independently on more than one instrument, data that are independently
supported by other stable geophysical measurement systems, and data for
which noise levels have been quantified. Reported measurements made with single
instruments or time histories of measurements showing data only for a short period
before earthquakes with some “precursive” feature but no coseismic signals, are
generally suspect and will not be included here.