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:
| Gill | Latitude | Longitude | Diameter (km) | Diameter (mi) |
| --- | --- | --- | --- | --- |
| A | 63.6° S | 72.9° E | 13km | 8mi |
| B | 61.7° S | 69.9° E | 31km | 19mi |
| C | 62.2° S | 67.4° E | 30km | 19mi |
| D | 63.4° S | 79.8° E | 15km | 9mi |
| E | 63.3° S | 70.4° E | 13km | 8mi |
| F | 63.8° S | 65.1° E | 23km | 14mi |
| G | 63.5° S | 68.2° E | 32km | 20mi |
| H | 63.9° S | 70.2° E | 8km | 5mi |
Question:
What shows for the Longitude when there is a Diameter (km) of 31km?
Answer:
69.9° E