This explanation seems to ignore the timestamps that are stored along with the hotspots/towers data. What do the timestamps represent? As a devils advocate, if

This explanation seems to ignore the timestamps that are stored along with the hotspots/towers data. What do the timestamps represent? As a devils advocate, if I'm a developer writing some sort of logging routine I'm including a timestamp without even thinking about how or why it would be used. Its a logger its supposed to have timestamps ;-)