Air pollution macro-regions identification using machine learning and spatio-temporal analysis
Fig 6
Calinski-Harabasz Index for cluster number validation for PM10 (blue line), PM2.5 (orange line), PM2.5/PM10 (green line).
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Calinski-Harabasz Index for cluster number validation for PM10 (blue line), PM2.5 (orange line), PM2.5/PM10 (green line).