Structure of the coronal magnetic field at five representative instants of the modelled solar cycle. The times are, from left to right, t = 0, 2.75 ,3.30, 3.80, 4.40 yr corresponding, respectively, to the activity minimum, the early rising phase, the late rising phase, the maximum, and the declining phase of the cycle. The field lines are coloured according to the terminal speed of the wind (at the outer boundary of the domain, r = 15 R_⊙) flowing along each one (dark red and orange represent fast wind flows, and blue slow wind flows; cf. the colourbar in Fig. 2). The grey lines represent closed field lines, for completeness.