Fig. 3: GDP, urbanization, and nighttime light.
From: The rural limits of conflict monitoring using nighttime lights
a GDP and urbanization of individual countries and their respective NTL threshold categories, indicated by the size of the country circles. b Results of OLS regressions of how GDP per capita and urbanization are related to NTL threshold and percentage of the population without NTL, respectively. *p < 0.1; **p < 0.05; ***p < 0.01.
