Format: UTC timestamp,number of free lots
If larger timespans have 0 free lots, the parking spot isn't necessary full. It could also be closed or don't have live data for this time.
If you want to get all data please download Archive.tar.xz It's a compressed archive of all *.csv dumps.
The files annotated with backup-2015
are a backup from another instance and reach back to July 2015.