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 | Name (English) | Population 2008-07-01 | Area (km²) | Pop./ km² | ISO 3166-2 | Administrative centre |
| --- | --- | --- | --- | --- | --- | --- | --- |
| 1.0 | Höfuðborgarsvæði | Capital Region | 200969.0 | 1062.0 | 167.61 | IS-1 | Reykjavík |
| 2.0 | Suðurnes | Southern Peninsula | 21431.0 | 829.0 | 20.18 | IS-2 | Keflavík |
| 3.0 | Vesturland | Western Region | 15601.0 | 9554.0 | 1.51 | IS-3 | Akranes |
| 4.0 | Vestfirðir | Westfjords | 7279.0 | 9409.0 | 0.85 | IS-4 | Ísafjörður |
| 5.0 | Norðurland vestra | Northwestern Region | 7392.0 | 12737.0 | 0.73 | IS-5 | Sauðárkrókur |
| 6.0 | Norðurland eystra | Northeastern Region | 28925.0 | 21968.0 | 1.21 | IS-6 | Akureyri |
| 7.0 | Austurland | Eastern Region | 13786.0 | 22721.0 | 0.52 | IS-7 | Egilsstaðir |
| 8.0 | Suðurland | Southern Region | 23972.0 | 24526.0 | 0.87 | IS-8 | Selfoss |
Question:
when the name is southern region, what is the administrative centre?
Answer:
Selfoss