Map of population (IMAGE) Estonian Research Council Caption Orange colors indicate that annual average population presence based on mobile positioning data is higher than based on population registry, whereas purple colors indicate that average population presence is lower. In grey areas mobile positioning and population registry show similar populations. Author: Ago Tominga Credit Author: Ago Tominga Usage Restrictions There are no restrictions. License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.