Figure 2

DendroScan screenshot, showing the dendrogram results for different data levels. (a) “Level 1” dendrogram in which all studied samples are considered. The red bar on the left indicates a low statistical power index (SPI). The 12 tested samples fall into two main clusters (marked by blue and red colour) and are separated by large dissimilarity values of more than 45. These two sample sets were individually used for further dendrogram computation. (b) To obtain the “level 2” dendrogram, all samples of the first main cluster (red group in a) were processed. The yellow SPI bar indicates moderate reliability. Dashed box encloses four samples suggested to be of identical morphology. (c) For these four samples a further-downsized (“level 3”) dendrogram was computed. The SPI is already quite high, but according to the DAPM protocol, further t- and e-tests have to be conducted before a statistical equivalence is ultimately verified.