Table 1.

Summary statistics for the distributions of humans and of land area

	Distribution of humans		Distribution of land area
	m	People/km2	m	People/km2
Maximum	5,516	79,407	5,516	79,407
Upper quartile	523	648	846	24.5
Median	194	262	408	4.3
Lower quartile	59	90	161	0.8
Minimum	−79	0.007	−79	0.007
Mean	435	967	673	42
SD	630	3,385	826	198
Correlation between elevation and population density	−0.061		−0.062

Distributions are by elevation (m) and by population density (people/km²), based on 19,032 administrative subdivisions with elevations interpolated from the EROS digital elevation model. Example: 75% of people lived at or below 523 m elevation and at or below a population density of 648 people/km²; 75% of occupied land area occurred at or below 846 m elevation and at or below a population density of 24.5 people/km².