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(IVAR) - Final Report - Strategic Environmental Research and ...

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Figure 6-68. A 24-hour history plot of the track activity from the SEAAR1l radar at SEA on 19<br />

October 2009.<br />

We enlarged the timestamp in the lower-left corner of the history plot. This timestamp identifies<br />

the last track update that was included in the history. We set the maximum range in the history<br />

plot to 7.24 km (4.50 miles), <strong>and</strong> each range ring represents a 800-m (0.5-mile) increment. The<br />

last update (or the end) of each track is identified with an enlarged dot at the head of the track.<br />

The 24-hour history from 20 April is shown in Figure 6-69:<br />

176

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