Simulated and observed leaf mass according to phytomer rank for the 2012–13 data set, with a recalibration step including four parameters. Lines represent the model simulations at the three dates (continuous lines for day 181 after emergence, dashed lines for day 223 and dotted lines for day 255) and symbols represent the experimental data (circles for day 181 after emergence, + for day 223 and squares for day 255).