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:
| Designation | Launch date/time ( GMT ) | Mass | Apogee | Inclination |
| --- | --- | --- | --- | --- |
| Prognoz 1 | 14 April 1972, 00:54 | kilograms (lb) | kilometres (mi) | 65° |
| Prognoz 2 | 29 June 1972, 03:47 | kilograms (lb) | kilometres (mi) | 65.3° |
| Prognoz 3 | 15 February 1973, 01:11 | kilograms (lb) | kilometres (mi) | 65° |
| Prognoz 4 | 22 December 1975, 02:08 | kilograms (lb) | kilometres (mi) | 65° |
| Prognoz 5 | 25 November 1976, 03:59 | kilograms (lb) | kilometres (mi) | 65.2° |
| Prognoz 6 | 22 September 1977, 00:51 | kilograms (lb) | kilometres (mi) | 74.4° |
| Prognoz 7 | 30 October 1978, 05:23 | kilograms (lb) | kilometres (mi) | 64.9° |
| Prognoz 8 | 25 December 1980, 04:02 | kilograms (lb) | kilometres (mi) | 65.8° |
| Prognoz 9 | 1 July 1983, 12:17 | kilograms (lb) | kilometres (mi) | 1.3° |
| Prognoz 10 | 26 April 1985, 05:48 | kilograms (lb) | kilometres (mi) | 76.8° |
Question:
What is Apogee, when Designation is Prognoz 6?
Answer:
kilometres (mi)