Short-term (over the 2009–2010 period, left), medium-term (over the 2002–2010 period, centre) and long-term (over the 1981–2010 period, right) variability, as described in Section 4. Names correspond to sources with rates of change outside a 2.5σ limit of the distribution. SN2008iz and the variable source 41.95+57.5 lie well outside the range of this plot and are not represented.