Local stellar CCFs, behind the transiting planet (i.e. CCF_out – CCF_in), for HAT-P-30. Top: plotted in various colours in the stellar rest frame (indicated by a dotted vertical line); the two in-transit local CCFs that fail the signal-to-noise test are shown as dashed lines. Individual out-of-transit CCFs subtracted from the master CCFout are displayed in grey. Bottom: plotted as a function of phase and colour-coded by the flux; a further horizontal dashed line indicates zero phase.