Volume rendering of Joule heating at t = 11 360 s (left). Magnetic field tracing at t = 11 360 s with a strong positive bias towards ȷ/B at coronal heights above 3.5 Mm (right). The traced lines are colored by ȷ/B, red at highest values and blue at lowest values. There are high values of ȷ/B at the reconnection region and also deep in the convection zone (see flux concentration on the right side of the box) but the tracing is seeded only by coronal seeds with high ȷ/B values.