Kyd Brook C.S.O : Kyd Brook

There is a known C.S.O (combined sewer overflow) a little further upstream from this testing site, which also has an E.D.M( event duration monitor) that lets you know when there is sewage discharging into Kyd Brook. I have noticed that the timings of the E.D.M are not necessarily always accurate on previous occasions and at best can be used as a guide.
Here is an example, please see the above screenshots, all taken the same day.
One shows the S.W.O discharging on 14/10/24 at 07:06am having started at 05:30am, duration 1hr 36 mins
The next shows the S.W.O discharging on 14/10/24 starting at 07:00 and still discharging at 7hrs 8 mins
The last screenshot shows the S.W.O discharging on 14/10/24 at 07:00 and stopping at 13:45 duration 6hrs 45mins.
These all overlap.