Program listing to determine tree valuation by the basic formula method using the Hewlett-Packard HP-11C programmable calculatorz
| f LBL A | 001- | 42, | 21, | 11 |
| RCL 1 | 002- | 45 | 1 | |
| 2 | 003- | 2 | ||
| ÷ | 004- | 10 | ||
| g x2 | 005- | 43 | 11 | |
| f π | 006- | 42 | 16 | |
| X | 007- | 20 | ||
| 2 | 008- | 2 | ||
| 7 | 009- | 7 | ||
| X | 010- | 20 | ||
| RCL 2 | 011- | 45 | 2 | |
| X | 012- | 20 | ||
| RCL 3 | 013- | 45 | 3 | |
| X | 014- | 20 | ||
| RCL 4 | 015- | 45 | 4 | |
| X | 016- | 20 | ||
| g RTN | 017- | 43 | 32 |
↵zAt the time this program was written, the accepted dollar value per square inch of basal area was $27.00. Values can be adjusted by changing the entries on program lines 008-009 as the need may arise.