# Example data

`example_v4.fasta` holds 92 amplicon sequence variants (ASVs) of the 16S
rRNA gene V4 region, and `example_v4_counts.tsv` their read counts in six
samples made to resemble the human gut, oral cavity and vagina (two each).

The sequences are V4 sequences of public TaxoBench mock communities: the
mockrobiota mock, the gut and vaginal mocks, and the communities simulated
from digestive-system, lung, skin, sputum and mixed biome compositions.
They were chosen by their TaxoBench reference species, from species typical
of each body site that the V4 model names at species level. With taxonova
26.11.0 and the V4 model, all 92 are named at species with the model's own
thresholds (the default); with a species confidence of 0.8, eight are named
at genus only.

The read counts are illustrative, not measured. Species shares were set to
resemble each body site, split over that species' sequences, padded with a
low-abundance tail of other site-typical species, and drawn as a random
sample of 9,000 to 18,000 reads per sample with a fixed seed. The second
vaginal sample is made to look dysbiotic (*Lactobacillus iners* with
*Prevotella bivia* and other anaerobes). ASVs are numbered from `ASV001` in
order of total count.