Pulse profiles of Swift J1749.4−2807 in the RXTE observations (the observation ID. is indicated in each panel) normalized for the corresponding average count-rate and folded with respect to the same reference time (53 888.9854166670 MJD). The energy band is 3–23 keV (data from PCU2). In the observation 95085-09-02-02, the eclipse was excluded. The solid line in each figure is obtained by truncating the Fourier series expansion of the pulses profiles to the first three terms.