Reviewer 2 - Existing implementations - comment 2

[Chilipp]

Reviewer comments:

Figure 1 compares four units (Jena, Heidelberg, Reading, Princeton). But your text says you received twelve responses. Why show only four? Explain the selection criteria.

[dokempf]

I would say we just picked "illustrative examples" and reference the full data of the 12 being in the data publication.