Angle between the comet equator and the Sun direction in the epoch covered by our observations (01/06/2008 to 11/04/2009). The dashed lines indicate the estimated latitudes of the three active regions described in Sect. 4.2. Northern and southern hemisphere are defined as facing the ecliptic north and south. Circular markers indicate the epochs of our observations, empty circles represent images where no clear evidence of jets could be seen, whereas full markers indicate unambiguous detection.