Who do they pay to draw up theses maps? To quote Mark Twain “There are three kinds of lies: lies, damned lies and statistics.”
According to the map the remote farming communities of Rum, Muck and Eigg in the Western Isles have a higher lever of infection than Central London and indeed anywhere south of the Severn Wash line.
Is it any wonder people are confused and have a mistrust of statistics and what we are being told.
It's because these are infection rates, not levels of infection - as the rubric clearly indicates. It would possibly be more meaningful to weight the test rates by population density, but then people would have an even harder time deciphering what they are seeing.
I don't believe the infection
rates in the remote Scottish Isles are higher the Major cities. The North of Scotland is such a massive largely unpopulated area that the map is next to meaningless.
But as you say they could display the statistics using different parameters and the map would be completely different which is my point, If for example the Lighthouse keeper on Sule Skerry stack became infected that would be a 100% infection rate for the particular island. Or maybe a 50% infection rate on changeover day, take your pick.