Read the data coverage time, not just a file name. Subtract it from the outage time to find the data gap. Measure interruption from the outage until checked service is working again, including detection and other delays. Compare both results with their stated maximums. Across an hour, count to the hour and then onward.
Worked example
Data covers through 08:56 and the outage begins at 09:04: 4 minutes to 09:00 plus 4 more makes an 8-minute gap. Detection ends at 09:06, restore at 09:09 and checks at 09:11. The full interruption is 7 minutes, not just the 3 minutes spent restoring.
The clock is still running
In this invented rehearsal, data covers through 10:53. Service stops at 11:05. Detection ends at 11:07; restoration ends at 11:12; checks finish and working service returns at 11:15. These consecutive stages include all delays. The maximum data gap is 12 minutes and the maximum interruption is 9 minutes. This is a paper model: do not restore, replace or delete real records.