Boltek Lightning/2000 - Manual (Page 66)

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During archive playback, the detector status window, the
general status line, the summary and NOWCast windows
reflect the real-time lightning activity, not the activity
presented by the archive.
At any time during the playback of an archive, you can press
the export button to start exporting archived lightning flashes
to a format that can be read by Google Earth. You may also
export data in a comma delimited text format.
Press the export button a second time to interrupt the
exporting of flashes.
You may start and stop the exporting of flashes any number
of times.
Though Google Earth can (presumably) display any number
of flashes, its operation can become somewhat sluggish when
it is asked to display a large number of flashes. We have
found that displaying over 100,000 flashes causes its operation
to become quite a bit slower. Displaying 10,000 or fewer
flashes seems to cause little or no slowdown.
When you close the archive player (or exit Lightning/2000),
you will be prompted for the name of the file that is to receive
the exported data.
The playback rate of the archive is an exact indication of how
long it will take to complete the playback of the archive. For
example, playing back a daily archive that comprises 24 hours
at 100x will take exactly 0.24 hours (or a little over 14
minutes).
Playing back archives at high rates of speed will tax slower
systems. If the archive contains a large number of strokes,
high-speed playback will probably tax even a fast machine.
Archive playback at high speeds can be made to go more
smoothly. Minimizing windows that have components that
are updated frequently will keep those windows from being
updated, thus making the archive playback go more smoothly.