[GRASS-user] how to update one attribute of a small vector map?

[Offenthaler Ivo]

What would you suggest as the most convenient way to update a small (60 points) vector map? E.g. a map's attribute "pollution_level" for a given point-ID (attribute "sitecode") has to be updated, based on some plain text output (columns "sitecode" and "pollution level") of another software?

Many thanks in advance! Ivo