IO540, I'm pleased it takes you only 37 seconds, but it takes ME longer than that, and I know I am more likely to make mistakes from a text-only presentation. By the way, another one I got wrong, and rather more pertinent: I got the location of an aerobatic display wrong a little while ago somewhere near Sheerness. Again, it was only when I saw it plotted on a graphical display that I realised my mistake.
Let's just hope I'm in a slow and careless minority.