Ah, the downloaded file didn't have a .tar extension, and looking at the file with the head utility made it seem like it was just a single TSV file. It is in f

Ah, the downloaded file didn't have a .tar extension, and looking at the file with the head utility made it seem like it was just a single TSV file. It is in fact a TAR file that expands into 1,699 .vels files. Thanks for the explanation.