Variations of the Hα line profile of HD 45314 over the past three observing seasons, with one season per column (the visibility window for HD 45314 ranges from early October to end of March). In each column, the older spectra (i.e. Oct–Nov) can be found at the bottom and the most recent ones (i.e. Feb–Mar) are shown at the top. For each epoch, the panels show representative pairs of observations separated by about one month (the dates are indicated by the labels) with the older spectrum shown in black and the more recent one in blue. To enhance the visibility, the vertical scale of some of the panels was changed, but the x-axis limits remained the same.