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:
| Rank | Name | Height ft (m) | Floors | Year |
| --- | --- | --- | --- | --- |
| 1.0 | AT&T Building | 617 (188) | 33.0 | 1994.0 |
| 2.0 | Fifth Third Center | 490 (149) | 31.0 | 1986.0 |
| 3.0 | William R. Snodgrass Tennessee Tower | 452 (138) | 31.0 | 1970.0 |
| 4.0 | Pinnacle at Symphony Place | 417 (127) | 28.0 | 2010.0 |
| 5.0 | Life and Casualty Tower | 409 (125) | 30.0 | 1957.0 |
| 6.0 | Nashville City Center | 402 (123) | 27.0 | 1988.0 |
| 7.0 | James K. Polk State Office Building | 392 (119) | 24.0 | 1981.0 |
| 8.0 | Renaissance Nashville Hotel | 385 (117) | 31.0 | 1987.0 |
| 9.0 | Viridian Tower | 378 (115) | 31.0 | 2006.0 |
| 10.0 | One Nashville Place | 359 (109) | 25.0 | 1985.0 |
| 11.0 | Regions Center | 354 (108) | 28.0 | 1974.0 |
| 12.0 | Sheraton Nashville Downtown | 300 (91) | 27.0 | 1975.0 |
| 13.0 | SunTrust Building | 292 (89) | 20.0 | 1967.0 |
| 14.0 | Bank of America Plaza | 292 (89) | 20.0 | 1977.0 |
| 15.0 | Andrew Jackson State Office Building | 286 (87) | 17.0 | 1969.0 |
| 16.0 | Omni Nashville Hotel | 280 (85) | 23.0 | 2013.0 |
| 17.0 | Palmer Plaza | 269 (82) | 18.0 | 1986.0 |
| 18.0 | Parkway Towers | 261 (80) | 21.0 | 1968.0 |
Question:
What is the average rank for a building with 24 floors?
Answer:
7.0