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:
| Dance | Best dancer(s) | Best score | Worst dancer(s) | Worst score |
| --- | --- | --- | --- | --- |
| Cha Cha Cha | Alesha Dixon | 39.0 | Gethin Jones/Kenny Logan | 22.0 |
| Jive | Gethin Jones | 37.0 | Dominic Littlewood/Penny Lancaster | 25.0 |
| Rumba | Kelly Brook/Matt Di Angelo | 33.0 | Letitia Dean/Kenny Logan | 23.0 |
| Paso doble | Alesha Dixon | 36.0 | Kenny Logan/Kate Garraway | 21.0 |
| Samba | Alesha Dixon | 36.0 | Kate Garraway | 16.0 |
| Waltz | Matt Di Angelo | 40.0 | Brian Capron | 18.0 |
| Quickstep | Alesha Dixon | 38.0 | Kate Garraway | 15.0 |
| Foxtrot | Alesha Dixon | 36.0 | John Barnes | 24.0 |
| Tango | Alesha Dixon | 38.0 | Kate Garraway | 19.0 |
| Viennese Waltz | Alesha Dixon | 38.0 | Kenny Logan | 26.0 |
| American Smooth | Gethin Jones | 38.0 | John Barnes | 22.0 |
| Salsa | Matt Di Angelo | 39.0 | Kate Garraway | 18.0 |
| Argentine Tango | Alesha Dixon | 38.0 | Matt Di Angelo | 35.0 |
Question:
What's the worst score for the worst dancer(s) john barnes, with a best score of 36?
Answer:
24.0