Examples of (a) accepted and (b) rejected results by CC measurements with multiple time windows. The top panels show seismogram pairs for the ‘parent’ time window, where the black vertical bars on the seismograms represent manual arrival time picks. The thick horizontal bars above the seismograms represent ranges of ‘child’ time windows. In the lower two panels, the seismograms for six child time windows are slid over a different parent time window. Each seismogram is aligned at τ = τmax, where CC(τ) is a maximum. All the seismograms are bandpass-filtered between 3.0 and 15.0 Hz.