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 |
| --- | --- | --- | --- | --- | --- |
| Chanel College | 7–13 | Coed | Masterton | Integrated | 5.0 |
| Douglas Park School | 1–6 | Coed | Masterton | State | 4.0 |
| Fernridge School | 1–6 | Coed | Fernridge | State | 4.0 |
| Hadlow Preparatory School | 1–8 | Coed | Masterton | Integrated | 8.0 |
| Lakeview School | 1–8 | Coed | Masterton | State | 2.0 |
| Makoura College | 9–13 | Coed | Masterton | State | 2.0 |
| Masterton Intermediate | 7–8 | Coed | Masterton | State | 5.0 |
| Masterton Primary School | 1–6 | Coed | Kuripuni | State | 3.0 |
| Mauriceville School | 1–8 | Coed | Mauriceville | State | 5.0 |
| Opaki School | 1–8 | Coed | Opaki | State | 10.0 |
| Rathkeale College | 9–13 | Boys | Opaki | Integrated | 9.0 |
| Solway College | 7–13 | Girls | Masterton | Integrated | 8.0 |
| Solway School | 1–6 | Coed | Masterton | State | 6.0 |
| St Matthew's Collegiate | 7–13 | Girls | Masterton | Integrated | 9.0 |
| St Patrick's School | 1–6 | Coed | Masterton | Integrated | 5.0 |
| Tinui School | 1–8 | Coed | Tinui | State | 6.0 |
| TKKM o Wairarapa | 1–15 | Coed | Masterton | State | 2.0 |
| Wainuioru School | 1–8 | Coed | Wainuioru | State | 9.0 |
| Wairarapa College | 9–13 | Coed | Masterton | State | 6.0 |
| Wairarapa Teen Parent Unit | 9–13 | – | Masterton | State | 1.0 |
| Whareama School | 1–8 | Coed | Whareama | State | 10.0 |
Question:
Name the average decile for state authority and area of fernridge
Answer:
4.0