Table S1.

Contamination estimates based on mitochondrial and X-chromosomal data

Sample	Method	Mean coverage	Contamination estimate	P value	95% Confidence intervals
Shuká Káa	Mitochondria	101.46	0.02	N/A	0.01–0.03
Shuká Káa	X chromosome	Insufficient coverage	—	—	—
302	X chromosome	3.98	0.008		1.23 × 10−9
302	Mitochondria	164.39	0.01	N/A	0.00–0.02
443	Mitochondria	183.90	0.01	N/A	0.00–0.02

N/A, not applicable.