Fig 11. Estimates of a single model parameters with one known and one unknown parameter.

A) estimates of leaf density ρ with mean leaf radius r fixed, B) estimates of leaf density ρ with average leaf orientation α fixed, C) estimates of leaf radius r with leaf density fixed, D) estimates of average leaf orientation α with leaf radius r fixed, E) estimates of leaf radius r with average leaf orientation α fixed, F) estimates of average leaf orientation α with leaf density ρ fixed. Whenever a parameter was fixed to a known value, 100/m³, 1.5 cm, and 7° were used for leaf density, mean leaf radius, and mean leaf orientation, respectively. Whenever a parameter was left unknown and free to change, it was selected randomly from the values in the following sets for each echo: leaf density [20, 100, 200, 300, 500]/m³, mean orientation angle [0, 20, 40, 60, 80]°, and mean leaf radius [7, 10, 13, 17] mm. The coefficient of determination is indicated in the bottom right corner for each estimation.