I hadn't seen Panoramax before, but I'm finding exploring it frustrating.

If I look at Melbourne I see there is some data: https://api.panoramax.xyz/?focus=map&map=5.99/-37.126/147.65...

But if I zoom in the data points disappear: https://api.panoramax.xyz/?focus=map&map=7.45/-37.333/146.16...

Eventually, by random scanning: https://api.panoramax.xyz/?focus=map&map=18.07/-38.084429/14...

I found one point: https://api.panoramax.xyz/?focus=map&map=18.89/-38.0848624/1...

How am I supposed to discover the coverage?