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The wind direction graph plots wind direction against time. The right hand axis has North top and bottom with South in the middle. Both gust and average wind directions are plotted.
The instrumentation lacks resolution just West of North. The specification has a resolution of ±18° in the range 347° to 0°. The rest of the range is ±8°. This lack of resolution manifests itself as stripes in that area of the graph.
The sampling interval for the gust reading is 5 seconds, for the average reading 1 minute.
During the winter prolonged periods with no apparent change of wind direction might be due to the wind vane being frozen. Check the external temperature.
| Howhill Weather - Graphs |
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Updated: Fri 11 Jan 2008, 05:09 UTC |