freq_spark
LOADING
2. South
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5000-12000 Hz
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2000-5000 Hz
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1000-2000 Hz
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500-1000 Hz
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350-500 Hz
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250-350 Hz
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180-250 Hz
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140-180 Hz
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90-140 Hz
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75-90 Hz
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60-75 Hz
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50-60 Hz