https://www.selleckchem.com/products/tpca-1.html
The cluster dendrogram shows that all the days could be clustered in 6 groups most of the clusters shows the daily peaks between 1100 and 1500 with a smooth curve (Cluster 1 and 3) or with a strong peak (2 and 5). Days included in cluster 9 shows an earlier peak in the morning (before 90. On the other hand, cluster 6 shows a peak in the afternoon, after 1500. Hourly concentrations show a sharper pattern during the season, with the peak during the hours close to the emission. Out of the season, when pollen is expected to come from farth
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