Name	Last modified	Size	Description
	Parent Directory		-
	byvar/	2017-03-15 13:13	-
	desc.txt	2017-03-15 13:13	80K
	sum.txt	2017-03-15 13:13	8.5K
	tab.txt	2017-03-15 13:14	1.9M

Apache/2.4.53 (FreeBSD) OpenSSL/1.1.1t-freebsd mod_apreq2-20090110/2.8.0 mod_perl/2.0.12 Perl/v5.34.3 Server at data.nber.org Port 443