NUPPI timing data on PSR J1744−1134. Top: Timing residuals (i.e., differences between measured pulse arrival times and arrival times predicted by a model for the pulsar) as a function of time for the millisecond pulsar J1744−1134 observed with the Nançay Radio Telescope at the central frequency of 1.484 GHz using the NUPPI backend. The 512 MHz of frequency bandwidth recorded by NUPPI were split into eight sub-bands of 64 MHz each, and the observations were integrated in time. Pulse arrival times were extracted from the timing data using the MTM method, as further described in Sect. 3. Time intervals when the NRT was inactive or when the low-frequency receiver was unavailable are highlighted with arrows (for interruptions shorter than 40 days) and shaded areas (when intervals were longer than 40 days). See Sect. 3.1 for details on the individual interruptions. Bottom: Average number of 1.4 GHz NUPPI observations of PSR J1744−1134 per month as a function of time. The average cadence was estimated by counting the number of observations within a time window of 100-d centered on the considered date, and normalizing the obtained number to 30 days.