All affect the dispersion of substances that contaminate the air is dust, PM10 TSP. Temperature and relative humidity are suitable. From the diagram, you will see that the wind rose, wind direction, and most of the blows came from the North-East. From the image, you will see that the wind rose diagram with gray is in the range of 0.5-2.1 wind speed m/s showed minimal wind speed, the dust is less fragmentation.
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