Efficiency

[allsorts]

I would like to change the measure for the efficiency of the stations.

That is good to hear, as you say the current measures are not overly useful in setting up a station. To get towards the top of the list they tend to push stations into sending lots of signals.

Part of this is the current distance values used (S up to 50 km, M up to 500 km and L up to 5,000 km) and the default sort being on L. Could the participation data be analyised against distance to produce an "optimum" detection distance? Then use that +/-, say, 500 km as the "M" measurement. S then going up to the lower M limit and L above the upper M lmit. The default sort being made on the M value.

The other problem is the use of all strikes within a region and the regions being very big. If you created smaller regions you get boundaries and problems with stations close to those boundaries. Seems sensible to use strikes in each of the distance ranges from the station as described above.

I quite like Cutty's:

Efficiency = Strokes Detected / Signals Sent 
Effectivity = Strokes Detected / Signals Sent - Strokes Detected

Being based purely on the numbers from a given station it removes the influence of the total region count which generally has the affect of pushing a station that sends few but high quality signals down the list.

Not sure how to combine those with a distance. "signals sent" doesn't have any distance information but does that matter? I don't think it does.

The Signals v Strikes graphic is an excellent visual and quick check for "how is my station doing"? As there isn't a line at whcih a station swtiches for "good" to "bad", I think a fixed shaded background color would make interpretation a little easier, green (upper/mid left) to red (lower right).