Name	Last modified	Size	Description
	Parent Directory		-
	byvar/	2016-12-16 12:29	-
	desc.txt	2017-08-30 16:27	13K
	sum.txt	2017-08-30 16:27	5.2K
	tab.txt	2017-08-30 16:28	3.7M

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