How was the map created?

The panoramas of above mentioned dataset are taken at different dates (see table below). To have a map that is aligned with the panoramas we extract the covered part of Manhattan from the planet.osm file of December 2017. The map tiles were rendered with mod_tile and a carto config that removes street and district names.

	2009	2011	2013	2014	2015	2016	2017	unknown
Count	93	73	55	286	71	296	25745	3022