Explanation for binary files inside source package according to
  https://lists.debian.org/debian-devel/2013/09/msg00332.html

Files: data/currencies.rda
Documented: man/currencies.Rd
  ISO-4217 currency data.

Files: data/edge_list_1.rda
Documented: man/edge_list_1.Rd
  Edge list - Version 1.

Files: data/edge_list_2.rda
Documented: man/edge_list_2.Rd
  Edge list - Version 2.

Files: data/node_list_1.rda
Documented: man/node_list_1.Rd
  Node list - Version 1.

Files: data/node_list_2.rda
Documented: man/node_list_2.Rd
  Node list - Version 2.

Files: data/usd_exchange_rates.rda
Documented: man/usd_exchange_rates.Rd
  US Dollar exchange rates.

 -- Michael R. Crusoe <crusoe@debian.org>  Thu, 01 Apr 2021 10:48:29 +0200
