Deviations in the percentage of Δν for individual chunks each corresponding to 80 day-long time series of the core-He-burning stars KIC 8694070 (top) and KIC 11450315 (bottom) observed by Kepler. The reference value of Δν, Δν₀, is obtained from the full-length light curve. Measurements of Δν obtained from individual chunks are shown by orange dots, with associated 1-σ error bars. The horizontal dashed line corresponds to Δν₀, with its 1-σ confidence region marked by the teal shading. The grey shading indicates the 1-σ confidence region of the sample of chunk measurements.