We show here the data that are associated to the paper: The medial offshore record of explosive volcanism along the central to eastern Aegean Volcanic Arc, part 2: Tephra ages and volumes, eruption magnitudes and marine sedimentation rate variations, submitted for publication at G-Cubed. We present in Table 1 density measurements for Aegean arc marine and terrestrial tephras. Table 2 indicate the sedimentation rate at all core positions of the research cruise POS513 with RV Poseidon in 2017, including ages given by correlations to dated eruptions and newly estimated ages based on sedimentation rates. Table 3 summarizes the marine tephra thicknesses found in the POS513 cores and includes a compilation of the respective tephra occurrence in the entire Mediterranean region.