Time-aligned overlayfreq (left, blue) · cell temp (right, red)
freq decimated min/max · witness solid · in-loop dashed
Δfreq vs cell temperaturescatter + parabolic fit
6,328 pairs · ν = a·(T − T₀)² + ν₀ · T₀ = 91.87 °C
Residuals after parabolic fitν − [a·(T − T₀)² + ν₀] vs T
σ_residual = 0.015 Hz