Analysis of the rectified light curve of star CoRoT 102672979 (star No 5, in the LRA1) in parts. Three phases are found in the complete light curve: (a) brightening phase ↔, (b) relaxation phase ↔ and (c) relative quiescent phase ↔ (upper left panel). The DFT in each phase is shown (lower left panels); changes in amplitude of the main groups of frequencies at 0.83 and 1.58 c d⁻¹ between the different phases (right panels) is shown; errors of the amplitude estimates are ~ ±10% ppm on average are represented. The amplitudes of the two frequency groups are clearly anticorrelated during the brightening phase.