1.3.Their availability rate shall be 98 %, according to the following table (the figures have been rounded to the nearest convenient unit):U.K.
| An availability of | means an unavailability of | ||
|---|---|---|---|
| Daily | Monthly | Yearly | |
| 98 % | 0,5 hours | 15 hours | 7,5 days |
Member States are encouraged to respect the daily availability rate, however it is recognised that certain necessary activities, such as system maintenance, require a down time of more than 30 minutes. However, the monthly and yearly availability rates remain mandatory.