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

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As can be seen in Figure 6-83, the radar tracked 100 or more targets every hour for the entire<br />

120-hour period, including the approximately 15 hours between sunset <strong>and</strong> sunrise on each of<br />

these dates.<br />

We analyzed a 24-hour set of plots <strong>and</strong> tracks from the SEAAR2l DRP on 19 October 2009 to<br />

establish the daily pattern of avian activity. We replayed the plots <strong>and</strong> tracks using the TVW<br />

application to produce 12 2-hour histories for the full 24-hour period: Figure 6-84 is a tiled<br />

image of those 12 track histories 22 . Sunset <strong>and</strong> sunrise were approximately 01:13 UTC <strong>and</strong><br />

14:34 UTC, respectively, on this date.<br />

22<br />

The times displayed in Figure 6-84 are shown in UTC; the corresponding Pacific Daylight Time (PDT) values<br />

would have been seven hours earlier at SEA: 19:00 18 on October 2008 through 17:00 on 19 October 2009.<br />

197

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