The SQL Server 2016 Developer Edition licensing reads, in part,

1.  INSTALLATION AND USE RIGHTS. a.  General. You may install and use copies of the software on any device, including third party shared devices, to design, develop, test and demonstrate your programs. You may not use the software on a device or server in a production environment. b.  Demonstration. Any person that has access to your internal network may install and use copies of the software to demonstrate use of your programs with the software. Those copies may not be used for any other purpose. c.  User Testing. Your end users may access the software to perform acceptance tests on your programs. 

If I read this correctly, this would allow us to copy production data to a non-production server containing SQL Server 2016 Developer for development, testing and internal, ad-hoc, type queries. Would this be an accurate interpretation?