Striking Analysis - Help [CAS] ... more useful feature was the ability to visualise piece of ringing — Jonathan Frye
That's also the primary output of CIREL. It shows the real strike positions of all bells in black with the 'ideal' positions in green behind it, and has the option of adding the line of one or more bells. That is the most useful display for detailed diagnisis of individual issues such as over or under shooting leads and lies, sloppy dodges or places, sluggish turn rounds, and so on. It also has the option to highlight errors above a preset threshold, which can be useful for getting overall impressions, eg more early than late,close hunting up and wide hunting down.
You can also drill down for more detail on individual bells and you can analyse limited portions of the ringing.
But that takes more time to study, so it is most relevant to detailed coaching or team practice before a competition.
In general practices there isn't usually time for that so what gets used most (by us) is the information CIREL generates at the end of every touch: a bar chart of RMS error for every bell with a line across the average, and a bar chart showing prevalence of errors (above threshold) late/early, hand/back for each bell (plus some figures). They are easy to take in from wherever you are ringing (providing the Treble stands to one side).
can also deliver numerical statistics about whether people are consistently quick or slow at each stroke, and what their standard deviation is. We found this to be of relatively little use for a local band — Jonathan Frye
That's what CIREL's graphs show and it is certainly of interest. Most people do look at it after each touch. If it looks particularly good overall someone often asks what the actual value was, and there is quiet rivalry among the better ringers to have lower individual errors. Learners (with higher errors obviously) also look at it to learn 'how' they may have done.