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:
| Club | Played | Won | Drawn | Lost | Points for | Points against | Tries for | Tries against | Try bonus | Losing bonus | Points |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| Club | Played | Won | Drawn | Lost | Points for | Points against | Tries for | Tries against | Try bonus | Losing bonus | Points |
| Ystrad Rhondda RFC | 22 | 19 | 0 | 3 | 672 | 280 | 81 | 34 | 9 | 2 | 87 |
| Penallta RFC | 22 | 17 | 0 | 5 | 499 | 312 | 73 | 40 | 10 | 2 | 80 |
| Mountain Ash RFC | 22 | 16 | 0 | 6 | 486 | 270 | 60 | 29 | 8 | 4 | 76 |
| Tredegar RFC | 22 | 13 | 0 | 9 | 521 | 327 | 69 | 41 | 10 | 4 | 66 |
| Builth Wells RFC | 22 | 13 | 0 | 9 | 517 | 297 | 66 | 37 | 10 | 3 | 65 |
| Treherbert RFC | 22 | 14 | 0 | 8 | 445 | 406 | 57 | 45 | 5 | 2 | 63 |
| Abercynon RFC | 22 | 12 | 0 | 10 | 535 | 476 | 71 | 64 | 9 | 2 | 59 |
| Ynysybwl RFC | 22 | 10 | 0 | 12 | 476 | 389 | 67 | 47 | 6 | 4 | 50 |
| Rhydyfelin RFC | 22 | 9 | 0 | 13 | 385 | 426 | 51 | 53 | 5 | 6 | 47 |
| Newport HSOB RFC | 22 | 5 | 0 | 17 | 380 | 710 | 53 | 99 | 5 | 5 | 30 |
| Llanishen RFC | 22 | 4 | 0 | 18 | 300 | 632 | 35 | 92 | 3 | 3 | 22 |
| Pill Harriers RFC | 22 | 0 | 0 | 22 | 208 | 899 | 33 | 135 | 1 | 3 | 5 |
Question:
what amount of points were lost by 13?
Answer:
47.0