Hi, the January 2015 archive is not encoded in UTF8 but in ISO 8859-1: this seems to be the only archive with this exception (I downloaded all the archives from December 2018 to January 2015).
Can be downloaded here, file: pagecounts-2015-01-views-ge-5-totals.bz2.
Also, the content is weird: we can found in the archive the pagecounts for the article -field-empty- or index.html in many projects, but these articles never seem to have existed. This is the first time I've come across stuff like this.
Can the archive be rebuilt?