1. New york city taxi and limousine commission. http://www.nyc.gov/html/tlc/html/about/trip_record_data.html
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3. Block range index. https://www.postgresql.org/docs/9.6/static/brin.html
4. Postgis - spatial and geographic objects for postgresql. http://postgis.net
5. Postgresql: a powerful, open source object-relational database system. https://www.postgresql.org/