This collection of data files is being shared with you through
Arvados.  You can download individual files listed below.  To download
the entire directory tree with wget, try:
$ wget --mirror --no-parent --no-host --cut-dirs=1 'https://b981d1c782ec2eabab07980c8e1b8e6a-87.collections.ac2it.arvadosapi.com/_/'