Table 4.

The coefficients in $f\left(P,,,D\right)$ estimation formula for fusiform leaf, using sample square.

$i$	$a_{i1}$	$a_{i2}$	$a_{i3}$
1	19.187855	1.156578	− 11.530798
2	0.000651	0.027966	− 0.000930
3	0.389277	0.013358	0.030359
4	4.821348	− 0.046318	0.778747
5	1.215673	0.025448	− 0.030386
6	0.483192	− 0.008525	0.111023