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:
| Date | Title | Origin | Label & Cat. no. | Chart no. |
| --- | --- | --- | --- | --- |
| 6/1965 | For Your Love | US | Epic LN 24167/BN-26167 | 96.0 |
| 11/1965 | Having a Rave Up with The Yardbirds | US | Epic LN 24177/BN 26177 | 53.0 |
| 7/1966 | Yardbirds aka Roger the Engineer | UK | Columbia SX 6063/SCX 6063 | 20.0 |
| 7/1966 | Over Under Sideways Down | US | Epic LN 24210/BN 26210 | 52.0 |
| 8/1967 | Little Games | US | Epic LN 24313/BN 26313 | 80.0 |
Question:
What is the highest chart number for the song Yardbirds aka Roger the Engineer?
Answer:
20.0