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:
| Constituency number | Name | Reserved for ( SC / ST /None) | District | Number of electorates (2003) |
| --- | --- | --- | --- | --- |
| 9 | Gohad | SC | Bhind | 152607.0 |
| 10 | Mehgaon | None | Bhind | 157316.0 |
| 11 | Attair | None | Bhind | 182294.0 |
| 12 | Bhind | None | Bhind | 240052.0 |
| 13 | Ron | None | Bhind | 141143.0 |
| 14 | Lahar | None | Bhind | 190636.0 |
| 22 | Seondha | SC | Datia | 162244.0 |
| 23 | Datia | None | Datia | 156910.0 |
| Total: | Total: | Total: | Total: | 1383202.0 |
Question:
What is the Constituency Number when the Number of Electorates (2003) is more than 156,910, and Reserved for sc?
Answer:
22.0