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:
| TV Station (Operator) | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 1H |
| --- | --- | --- | --- | --- | --- | --- | --- |
| BBTV CH7 | 28.0 | 27.4 | 27.7 | 31.0 | 28.0 | 31.0 | 31.7 |
| TV3 | 20.8 | 22.2 | 22.5 | 28.0 | 28.0 | 27.0 | 27.0 |
| TV5 | 16.5 | 16.0 | 15.9 | 20.0 | 20.0 | 18.0 | 17.7 |
| Modernine TV | 13.9 | 14.4 | 14.5 | 17.0 | 19.0 | 20.0 | 20.0 |
| NBT | 2.3 | 2.8 | 2.6 | 4.0 | 4.0 | 4.0 | 3.6 |
| Thai PBS | 18.5 | 17.3 | 16.9 | 0.0 | 0.0 | 0.0 | 0.0 |
Question:
What is the average 2007 value for a 2006 of 2.8 and 2009 under 20?
Answer:
2.6