Thetford Parkrun Even Pacing Splits

I'm a regular at Thetford Parkrun, and occasionally I volunteer as a pacer. My GPS watch can mis-measure the distance and will sometimes mean I'm off my target time by ±20s or more at the end. To help make sure I finish at the right time I've created a spreadsheet with even split times at various key points along the route for different pacing targets. You can compare your offset from these to that shown on your watch, and adjust your pace accordingly.