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The OCC report publishes total loading and unloading time and the other activity left over from a station stay, but nothing recorded when handling started or ended — the July 2026 seed had to write the figure into a checkpoint note. Four nullable stamps now ride the stop's arrival row, which is the row the staying-time report builds a stay from (a turnaround's departure belongs to a different schedule). Handling is unloading start to loading end, so a container stop reads as one window and a bulk station that only loads or only unloads still reports its half; other activity is the rest of the stay. Both stay NULL where nothing was logged rather than collapsing to zero. - station-staying-time: + loading/unloading and other activity per stop - turnaround-cycle: + the same, summed over the cycle's stops - loading-unloading (new): per train per station per period, so a week or month view is that train's average over its stops - the stop/stay query moves to operations-classification, shared by both