Fla. Stat. § 90.304 : — EVIDENCEEVIDENCE CODE — Presumption affecting the burden of proof defined TEXT PDF In civil actions, all rebuttable presumptions which are not defined in s. 90.303 are presumptions affecting the burden of proof. Fla. Stat. § 90.304 s. 1, ch. 76-237; s. 1, ch. 77-77; s. 22, ch. 78-361; s. 1, ch. 78-379.