Table 1 Characteristics of the coronavirus species. In the first and second columns, we have the species and number of samples extracted from NCBI for each of them. In NCBI, one sample of each species is identified as a reference sample. Thus, in the third and fourth column, we present, respectively, the size (in base pairs) and CG content (in the percentage of the sequence) of the samples identified as reference on NCBI.

From: Multifractal analysis and support vector machine for the classification of coronaviruses and SARS-CoV-2 variants