People in our sittings often use one word for two clocks. A container can sit at an inland depot while the cartons inside it have not yet become yard stock. Later, those same cartons can sit on a mezzanine long after the box has gone back. If both waits are added into a single “dwell” number, the paper blames the wrong door.
When we draw a Lane Movement Reading we keep the depot wait and the floor wait apart. The first date is the day the box was available to leave. The second is the day your gate wrote the cartons in. The third is the day a picker, a fitter, or a truck called them out. A spice importer in Min Buri once had a short depot wait and a long floor wait. Their argument with the forwarder dissolved when the chart showed the cartons had been inside their own fence the whole time.
Holiday closures make the same mistake in reverse. Songkran can hold a box at the depot for days that are not the yard’s fault. We mark official closures on the sheet before we talk about a supplier’s rhythm. If you only send us gate-out from your building, we will not pretend we know how long the box waited upstream.
Bring both clocks if you have them. If you only have one, say which door it belongs to. A smaller chart with an honest label is more useful than a total that mixes the depot and the floor.