Table 5.

Description of the camera data.

Name	Description	Type	Values
timestamp	Timestamp of detection in ISO 8601 microseconds format, timezone is CEST	String	YYYY-MM-DDTHH:mm:ss.ssssss
id	Unique person identifier, only in layer 3	Integer	0–29986
x	x coordinate in pixels, each pixel has a width and height of 5.5 cm	Integer	−99–1567
y	y coordinate in pixels, each pixel has a width and height of 5.5 cm	Integer	300–740

The “id” column is only present in the layer 3 tables, as detections have not been linked to unique visitors yet in layer 2. The full layer 2 and 3 tables contain all unfiltered and filtered detections of visitors respectively. The time slot specific tables of layer 3 only contain detections within the gallery area (0 ≤ x ≤ 845).