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:
| Name | Years | Gender | Area | Authority | Decile | Roll |
| --- | --- | --- | --- | --- | --- | --- |
| Featherston School | 1–8 | Coed | Featherston | State | 3.0 | 64.0 |
| Greytown School | 1–8 | Coed | Greytown | State | 6.0 | 348.0 |
| Kahutara School | 1–8 | Coed | Kahutara | State | 7.0 | 100.0 |
| Kuranui College | 9–13 | Coed | Greytown | State | 5.0 | 488.0 |
| Martinborough School | 1–8 | Coed | Martinborough | State | 7.0 | 251.0 |
| Pirinoa School | 1–8 | Coed | Pirinoa | State | 6.0 | 26.0 |
| South Featherston School | 1–8 | Coed | Featherston | State | 5.0 | 65.0 |
| St Teresa's School | 1–8 | Coed | Featherston | Integrated | 7.0 | 111.0 |
| Tuturumuri School | 1–8 | Coed | Martinborough | State | 7.0 | 17.0 |
Question:
tell me the total number of decile with a roll showing 251.
Answer:
1.0