Campbell Scientific RAWS-H Remote Automated Weather Station User Manual
Page 23
RAWS-H Remote Automated Weather Station
in FIGURE 9-3. Note that when a negative number is subtracted from a
positive number, the resulting arithmetic operation is addition.
For example, the declination for Longmont, CO is 10.1°, thus True North is
360° ─ 10.1°, or 349.9° as read on a compass. Likewise, the declination for
Mc Henry, IL is ─2.6°, and True North is 0° ─ (─2.6°), or 2.6° as read on a
compass.
FIGURE 9-1. Magnetic declination for the contiguous United States
17
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