HSD , as the circle is 15-16 min diameter an outlier even at 70 paces (approx 70 metres ) couold be measured from extreme edges and provide a difference of 12 -18 degrees .Assuming the 220 is from the centre then the winter solstice sunset is about 227 (spur to the south east of the top of Win Hill ) so therefore potentially aligned from the circle if not the centre . If it is visible on GE and a good co -ordinate can be got all the better .Judging by the map the outlier is slightly downhill from the circle , is it below the horizon ? .