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:
| Tribunal | Number of autos da fé with known sentences | Executions in persona | Executions in effigie | Penanced | Total |
| --- | --- | --- | --- | --- | --- |
| Lisbon | 248 (1540–1794) | 461 | 181 | 7024 | 7666 |
| Évora | 164 (1536–1781) | 344 | 163 | 9466 | 9973 |
| Coimbra | 277 (1541–1781) | 313 | 234 | 9000 | 9547 |
| Goa | 71 (1600–1773) | 57 | 64 | 4046 | 4167 |
| Tomar | 2 (1543–1544) | 4 | 0 | 17 | 21 |
| Porto | 1 (1543) | 4 | 21 | 58 | 83 |
| Lamego | 0 | 0 | 0 | 0 | 0 |
| Total | 763 | 1183 (3.76%) | 663 (2.11%) | 29611 (94.13%) | 31457 (100%) |
Question:
How many were penanced with 0 executions in effigie for a total of 21?
Answer:
17.0