Comparison of the DST detection statistic for the planets of the Kepler-36 system. Kepler-36c (above) with a size of 3.7 Earth radii and a period of 16.2 days produces a clear detection signal in the periodogram. Kepler-36b (below) with a size of 1.5 Earth radii and a period of 13.8 days, which shows significant transit timing variations, produces a distinguishible signal, although limited by the non-periodicity of the transit.