Fig 3. The implied ‘first appearance dates’ (i.e. ‘Start’ Boundaries) of the fifteen regions derived from the Bayesian statistical model (green).

The contributing radiocarbon data are additionally plotted (with modeled data in darker gray overlying the unmodeled, calibrated data in lighter gray). The horizontal bars below each of the probability density functions reflect the 68.2% and 95.4% highest probability density ranges, respectively.