Lifetimes of transient brightenings in the QS region at band 6. (a) Lifetimes at original resolution vs. lifetimes at degraded resolution corresponding to array configuration C3. (b) Brightness temperature excess at original resolution vs. lifetimes at degraded resolution corresponding to array configuration C3. The levels of the density plot, 0.05, 0.1, 0.15, 0.25, 0.5, and 0.75, are marked by the contour lines.