Campbell RAWS-P, Инструкция по эксплуатации

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RAWS-P Remote Automated Weather Station
FIGURE 9.3-4. USGS Web Calculator
In the example above the declination for Logan, UT is 12º 24
′
or 12.4º. As
shown in Figure 9.3-4, the declination for Utah is East (positive), so True
North for this site is 360 – 12.4 = 347.6 degrees. The annual change is 7
minutes West per year or -7 minutes/year.
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