Here are the witness cones from the middle of the kiln, second shelf... It looks like they performed exactly the way they were supposed to. I was very happy to see these. The kiln is oval in plan view, and some of the other cones I placed in it show that there are areas that didn't quite hit the target temperature. But from everything I've heard, that isn't that unusual (not a big concern)... just something to keep in mind when I'm loading it. I was firing to cone 04 (that's the middle cone in the picture) flanked by an 05 (the one tipped all the way down... the guide cone) and an 03 (the guard cone) on the other side.