Bullers™ Rings measure heatwork (the combined effect of temperature and time), not just raw ambient temperature. This gives a much more accurate picture of how your glazes and clay bodies are maturing across different zones of your kiln.
Temp by Ring
Shows the calculated temperature for every individual ring in your kiln. Use this to quickly spot specific rings that fired significantly hotter or cooler than the rest, regardless of their location.
Distribution & Outliers
This scatter plot groups rings by layer (Top, Middle, Bottom). It helps you see the overall "spread" of temperatures. If the dots are tightly clustered near the mean line, your kiln fired evenly. If they are spread far apart, you have high variance. Look for isolated dots—those are your outliers.
Δ Deviation
Shows how much each ring deviated from its Layer Average. A green bar pointing up means it was hotter than the other rings on that exact same shelf; a red bar pointing down means it was cooler.
Compass Radar
Maps temperatures based on their physical location (North, South, Centre, etc.). This is excellent for diagnosing faulty elements, cold door drafts, or dense packing on one side of the kiln. A perfectly even kiln will show concentric circles. If the shape is lopsided or spiky, your kiln has a directional bias.
Heat Map
A top-down grid view of your kiln. Red cells are hot zones, blue cells are cool zones. You can toggle this to show deviation from your Target Temp (ideal for seeing if the whole firing hit its goal), or deviation from the Overall Average (ideal for seeing internal balance regardless of target).