Well, thanks for that. Very weird design choice, I agree. You see they way they show usage, in a circular chart using segments, many people will assume it is a pie chart. Especially as the 'top half is lighter' design choice is not consistent since the grey 'empty' colour is uniform an does not exhibit this two-tone styling. If it was a pie chart, of course, every colour would be significant. Now I know it is a Humax chart I can look at it without the expectation of the pie chart standard logic that the UK population has had drilled in to them from childhood being used. The only wonder is why on earth Humax felt that making their own proprietary charting system look so much like a pie chart was a good idea, let alone not mentioning this important fact in the manual. Probably the same chap who decided it would be a good idea to miss out the TV AV button on the remote I suppose. Oh well, at least I know now.
Humax, what was wrong with just using a pie chart? It would then have been well understood. I don't see how your Humax charts improve on the pie chart, frankly. You may be trying to fix a problem that doesn't exist.
