O.C.G.A. § 24-10-1006: Summaries.

The contents of otherwise admissible voluminous writings, recordings, or photographs which cannot conveniently be examined in court may be presented in the form of a chart, summary, or calculation. The originals, or duplicates, shall be made available for examination or copying, or both, by other parties at a reasonable time and place. The court may order that the contents of such writings, recordings, or photographs be produced in court.