Retrieved 16 December 2018. ↑ "Aruoba-Diebold-Scotti Business Conditions Index - weekly macroeconomic activity - Philadelphia Fed". Archived from the original on 2013-10-17. Retrieved 2013-09-29. ↑ "Aruoba-Diebold-Scotti Business Conditions Index (12/08/2017 - 12/08/2018)" (PDF).