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:
| Position | Club | Played | Points | Wins | Draws | Losses | Goals for | Goals against | Goal Difference |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1.0 | Cultural Leonesa | 30.0 | 40.0 | 18.0 | 4.0 | 8.0 | 68.0 | 38.0 | 30.0 |
| 2.0 | Real Oviedo | 30.0 | 39.0 | 18.0 | 3.0 | 9.0 | 61.0 | 33.0 | 28.0 |
| 3.0 | Real Zaragoza | 30.0 | 39.0 | 18.0 | 3.0 | 9.0 | 69.0 | 41.0 | 28.0 |
| 4.0 | Real Gijón CF | 30.0 | 38.0 | 15.0 | 8.0 | 7.0 | 50.0 | 34.0 | 16.0 |
| 5.0 | CD Logroñés | 30.0 | 36.0 | 15.0 | 6.0 | 9.0 | 52.0 | 43.0 | 9.0 |
| 6.0 | Baracaldo AH | 30.0 | 33.0 | 15.0 | 3.0 | 12.0 | 47.0 | 42.0 | 5.0 |
| 7.0 | CP La Felguera | 30.0 | 30.0 | 11.0 | 8.0 | 11.0 | 41.0 | 45.0 | -4.0 |
| 8.0 | SD Eibar | 30.0 | 29.0 | 13.0 | 3.0 | 14.0 | 54.0 | 51.0 | 3.0 |
| 9.0 | CA Osasuna | 30.0 | 29.0 | 12.0 | 5.0 | 13.0 | 56.0 | 57.0 | -1.0 |
| 10.0 | UD Lérida | 30.0 | 27.0 | 10.0 | 7.0 | 13.0 | 41.0 | 56.0 | -15.0 |
| 11.0 | SD La España Industrial | 30.0 | 26.0 | 9.0 | 8.0 | 13.0 | 46.0 | 45.0 | 1.0 |
| 12.0 | Club Ferrol | 30.0 | 24.0 | 9.0 | 6.0 | 15.0 | 35.0 | 59.0 | -24.0 |
| 13.0 | Caudal Deportivo | 30.0 | 24.0 | 8.0 | 8.0 | 14.0 | 49.0 | 59.0 | -10.0 |
| 14.0 | Club Sestao | 30.0 | 23.0 | 8.0 | 7.0 | 15.0 | 45.0 | 56.0 | -11.0 |
| 15.0 | Real Avilés CF | 30.0 | 23.0 | 10.0 | 3.0 | 17.0 | 50.0 | 60.0 | -10.0 |
| 16.0 | CD Juvenil | 30.0 | 20.0 | 5.0 | 10.0 | 15.0 | 40.0 | 85.0 | -45.0 |
Question:
What is the average goal difference of club cultural leonesa, which has more than 27 points and less than 9 losses?
Answer:
30.0