Table 2.

Summary of Clinal Patterns of Variation with PC1

Continent	Sample Size	Longitude		Latitude		Haversine Distance
		ρ	p Value	ρ	p Value	ρ	p Value
Africa	102	−0.76	2.2 × 10−16	0.74	2.2 × 10−16	−0.60	2.1 × 10−11
America	64	0.91	2.2 × 10−16	−0.91	2.2 × 10−16	−0.90	6.5 × 10−26
Central and South Asia	201	−0.39	1.0 × 10−8	−0.25	2 × 10−4	−0.39	1.0 × 10−8
East Asia	229	−0.51	2.7 × 10−16	−0.89	2.2 × 10−16	−0.15	1.9 × 10−2
Europe	158	−0.44	6.5 × 10−9	−0.86	2.2 × 10−16	−0.95	1.0 × 10−78
Middle East	162	−0.66	2.2 × 10−16	−0.03	7.1 × 10−1	−0.65	1.8 × 10−20
Oceania	28	0.85	1.3 × 10−8	−0.85	1.32 × 10−8	0.85	1.38 × 10−8