Comparison of predicted and true galaxy cluster masses for an unaugmented test sample of 350 clusters. The black line represents a 1-to-1 relation. The magenta, orange, and green points represent predictions using ICM profiles truncated respectively at 2R₅₀₀, R₅₀₀, and 0.75 R₅₀₀, with 48, 15, and 7 bins. The inset shows the corresponding fractional residuals; the vertical lines represent the medians.