Fig. 6

Radiocarbon age vs. calendar age for wood sample from Transitional Inka/Early Colonial qero, MMA 1994.35.12. Plot derived using the calibration program, CALIB (rev. 7.0.4), by M. Stuiver and P. J. Reimer (copyright 1986–2017), available online as freeware at http://calib.org [28]. The bi-modal distribution suggests a date within the fourteenth century to be assigned with reasonable confidence