Every line Tifa records, with its id, name and mode (tube, elizabeth-line, overground or dlr) and the lines it shares track with. The ids are what line_status, disruptions and period_stats take.

The status of every line right now, refreshed from TfL each minute: status text, worst severity, TfL's reasons, whether it is good service and whether a problem is live or planned works; lines with live problems first, then planned works, then good service. Also the disruptions open now (with their start times and causes), the time of the last poll, and stale: true when there has been no poll for over 5 minutes (or the history cannot be read), so the status may be out of date.

One line in depth: its disruptions open now; the number of disruptions, minutes disrupted and share of watched time disrupted over the last 24 hours, 7, 30 and 90 days; its latest disruptions with TfL's reasons and their causes; and the London hours of the day at which its unplanned disruptions start.

Recorded disruptions overlapping a time range (default: the 30 days to now; at most 366 days), oldest first. One row per spell of one severity on one line: start, end (null while it is still going on), minutes, severity, status text, category, planned or not, cause and TfL's reason, and whether the end is estimated (recording was paused). Filter by line, category, cause and planned. total is how many match; when next_cursor is not null, call again with it (and the same other arguments) for the next page.

Figures for a period, for the network or one line: watched coverage, share of time with good service, unplanned and planned disruption counts, line-time disrupted, the change against the period before (when both were at least 80% watched), the most disrupted line, the longest unplanned disruption, the busiest day, the top causes, per-day (or per-week) bins and a per-line table. period names the period and gives prev and next: the end to pass for the period before or after. Unlike the other tools, times here (t0, t1, p0, starts and ends, bins, unwatched spans) are epoch seconds (UTC) as numbers; only period.first is ISO 8601.

When Tifa was watching, over a time range (default: the 7 days to now; at most 90 days): the spans each source covered, the share of the range watched, the gaps nothing watched, and per UTC day the polls recorded (of 1440) and the polls that failed. Check it before reading a quiet period as a good one.

The causes Tifa puts disruptions down to (read from TfL's reason text), as codes with labels, in the order the rules are tried. The codes are what disruptions takes as cause; a disruption with a null cause is unknown (cause=unknown finds those).