Live C/N0
Anomaly vs 1 hour
Anomaly vs 1 day
Anomaly vs 1 week
Cumulative anomalies
Centre = zenith, edge = horizon. With 1°×1° cells the 1-hour view is usually sparse (a cell is rarely revisited within an hour); the 1-day and 1-week views are the meaningful ones. Gray = no baseline yet for that direction.
Cumulative anomalies aggregates every stored observation: for each direction it counts how many readings fell at least the threshold (default 6 dB) below that direction's own median, then groups the counts into coarser cells. Deep red = a direction where the signal repeatedly drops — a persistent obstruction, multipath, or antenna issue. Gray = seen, but never anomalous. Unlike the live views above, this accumulates over all retained history, so a real problem direction stands out even though any single pass looks fine.
Bearings of the strongest anomalies in the selected window, drawn from the antenna (…) outward along each satellite's azimuth at the moment of the drop — the compass direction the obstruction or reflector most likely lies in. Use the controls to pick the time window and how many rays to show. Thicker / redder = larger drop; ray length is fixed (direction only, not distance). Click a ray for details; zoom and pan freely. Map data © OpenStreetMap contributors.
Each table lists the individual anomalous readings in that period, ordered by how far below the direction's own median they fell — from the threshold (default 6 dB) up to the worst. Δ dB = size of the drop; Sat and C/N0 are added for context. Tables scroll; only the strongest per period are listed.