overnight — minimal field impact · the disruption fell mostly (70% or more) inside the overnight window, which is defined in UTC: it starts at 19:00 UTC and ends at 03:00 UTC. In local time that is 22:00–06:00 EAT (Kenya · Ethiopia · Uganda) · 21:00–05:00 CAT (Rwanda) · 20:00–04:00 WAT (Nigeria). Anything up to 18:59 UTC counts as daytime.
during daytime / peak hours · 70% or more of the disruption happened outside that overnight window, when tractors are working — these are the incidents users actually feel.
spread across day and night · the disruption straddled both windows.
On the daily bars, Degraded means the service missed its target for up to 10 minutes that day (99.31–99.9% uptime); Partial outage means 10 minutes to ~1 hour 12 minutes (95–99.31%); Major outage means more than that (below 95%). The severity reflects how long the day was disrupted, not how badly at any moment. Percentages are the share of each day (sampled every 5 minutes) the service met its target — they are never adjusted for time of day. The live status word next to each row (Operational / Degraded / Outage) describes right now, from live probes.