Rotational behaviour and DM evolution over 80 d around the new small glitch at MJD 48550.37. Top: frequency residuals relative to a quadratic model adjusted to ν data from 20 d before and up to the glitch epoch (interval marked by vertical dotted lines). The ν values come from fits to TOAs in a moving window 3 d long that moves by 1 d each stride. Middle: spin-down rate . Values come from fits to TOAs in a moving window of length 10 d and that moves 1 d with each stride. Windows that contained the glitch epoch were not considered, hence the gap in the plots. Bottom: daily values of the dispersion measure and the model we used to describe its variation for the 40 d around the glitch.