- x-axis : surface of the edifices as they appear in D.Puck’s 1787 map (overall surfaces, all levels inclusive, and not only floor space).
- y-axis : duration of life of edifices – with a dotted line when it is approximate.

The visualisation is tested here on the town hall compound and three other edifices: small scales, grand scales, and St. Adalbert church (kosciól sw. Wojciecha)

Shades of red are proportional to surface, i.e the more a rectangle is red, the larger is the surface