Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Institution | Location | Athletic nickname | Undergraduate enrollment | Graduate enrollment | Total enrollment | 2013 Endowment\n(and US rank) | Academic staff | Motto |
| --- | --- | --- | --- | --- | --- | --- | --- | --- |
| Brown University | Providence,\nRhode Island | Bears | 6,316 | 2,333 | 8,649 | $2.7 billion (30th) | 736 | In Deo Speramus\n(In God We Hope) |
| Columbia University | New York,\nNew York | Lions | 7,160 | 15,760 | 22,920 | $8.2 billion (9th) | 3,763 | In lumine Tuo videbimus lumen\n(In Thy light shall we see the light) |
| Cornell University | Ithaca,\nNew York | Big Red | 13,931 | 6,702 | 20,633 | $5.3 billion (18th) | 2,908 | I would found an institution where any person can find instruction in any study. |
| Dartmouth College | Hanover,\nNew Hampshire | Big Green | 4,248 | 1,893 | 6,141 | $3.7 billion (22nd) | 571 | Vox clamantis in deserto\n(The voice of one crying in the wilderness) |
| Harvard University | Cambridge,\nMassachusetts | Crimson | 7,181 | 14,044 | 21,225 | $32.3 billion (1st) | 4,671 | Veritas\n(Truth) |
| Princeton University | Princeton,\nNew Jersey | Tigers | 5,113 | 2,479 | 7,592 | $18.2 billion (5th) | 1,172 | Dei sub numine viget\n(Under God's power she flourishes) |
| University of Pennsylvania | Philadelphia,\nPennsylvania | Quakers | 10,337 | 10,306 | 20,643 | $7.7 billion (11th) | 4,464 | Leges sine moribus vanae\n(Laws without morals are useless) |
| Yale University | New Haven,\nConnecticut | Bulldogs | 5,275 | 6,391 | 11,666 | $20.8 billion (2nd) | 4,140 | אורים ותומים\nLux et veritas\n(Light and truth) |
Question:
what is the difference in enrollment numbers (total graduate and undergraduate) between the highest attend and lowest attended ivy league school?
Answer:
16,779