Extended Data Figure 9: Pre-heat plateau test for sample ATSP#2013/12L1.
From: Early Middle Palaeolithic culture in India around 385–172 ka reframes Out of Africa models
A beta dose of 60 Gy was given after 8 h of bleaching of a fresh natural sample under a solar stimulator. Each data point shown represents the arithmetic mean of three aliquots for each pre-heat step. The recovered doses for 260 °C, 290 °C and 320 °C fell within the 5% of the total variation, that is within 57–63 Gy for an administered dose of 60 Gy. Error bars are the standard error of the mean of the three aliquots for each pre-heat temperature.