+-----+-----------+--------------+---------------+
|15 14|13 12 11 10| 9  8  7  6  5| 4  3  2  1  0 |
+-----+-----------+--------------+---------------+
| Age |Month, 1-12| Day, 1-31    |Year minus 1972| All Numbers
| 0-3 |           |              |minus 32 X Age | Are Decimal
+-----+-----------+--------------+---------------+