Comparison of the two analyses used in this work, ACF and GWPS, applied on the two different datasets used PDC-MAP (left-hand side panels) and KADACS (right-hand side panels marked with a prime) for KIC 12258514. For each dataset, the plots are as follows: the top panels show a) long-cadence Kepler light curves (cyan) and the quarters selected for the analysis (black), where vertical dotted lines indicate the transitions between the observing quarters. The top right panels show b) the associated power density spectrum as a function of period between 0.5 and 100 days. The middle left panels (c) and e)) depict the WPS computed using a Morlet wavelet between 0.5 and 100 days on a logarithmic scale. The c) panels correspond to the analysis of the entire light curve, while in the e) panels only the selected portions of the light curve are used in the analysis. The black-crossed area is the cone of influence corresponding to the unreliable results. The middle right panels (d) and f)) plot the GWPS as a function of the period of the wavelet (thick cyan line for d), thick black line for f)) and the associated fit composed from several Gaussian functions (thin green lines). The horizontal dashed line designates the position of the retrieved P_rot. Finally, the bottom panels g) show the ACF of the full light curve plotted between 0 and 100 days (cyan) and using only the selected portions of the light curve (black). The vertical dashed line indicates the returned P_rot for the ACF analysis.