A quick calculation of the size of the crowd for the 2024 hīkoi: Toitū Te Tiriti.
The path is recorded as a kml file, which is loaded in the notebook and used to estimate the area. The crowd density is guessed, mostly from reference images here: https://www.gkstill.com/Support/crowd-density/CrowdDensity-1.html
You can check out the google my map I drew to generate the kml file here: https://www.google.com/maps/d/u/0/edit?mid=157Qm7aHcVx8o6uVEjwhPEWp061cMb4w&usp=sharing