Fig. 3: Edge length per mass (mm/g) of individual blanks by lithic assemblages and by debitage types.

The box plots indicate the median (middle line) and interquartile range (box). The upper and lower ends of the whiskers represent the maximum and minimum, excluding outliers (single points) defined by the Tukey method. a Diachronic changes in the edge length/mass ratios of individual blanks according to the eight assemblages from LMP to Epipal (see Fig. 2 for the abbreviations of period- and site-names). Although the compared assemblages are aligned in chronological order from left to right, we do not assume a chronological relationship between LMP (TSB) and LMP (TFJ) and between IUP (WAR) and IUP (TFZ), as described in the text. Inequality symbols (> and <) in box plots note statistically significant differences only for box plots next to each other. The table shows the p-values of the pairwise comparisons by the Dunn–Bonferroni test (two-sided). The values lower than 0.05 are highlighted. b Edge length/mass ratios of individual blanks according to debitage types and assemblages (see Supplementary Table 1 for n values). See Supplementary Tables 2–4 for statistical significance of differences in flakes, blades, and bladelets among the assemblages. Lev. Levallois, CTE core trimming element. Source Data are provided in the figshare. https://doi.org/10.6084/m9.figshare.23577093.