Flow efficiency Little’s Law — the kitchen’s own best sustained time in system, over what it actually took; not capped, and self-scaling to this kitchen only (design §4)
Reference floor
—
the low percentile of observed time in system this range is judged against; frozen once, computed from — windows
Coherence whether the parts of one order finished together — the spread between a multi-station order’s first and last station clearing (design §5)
Backlog and throughput what the flow curve above is derived from
Why the decomposition beneath the curve — none of this enters either index, so none of it needed a weight (design §4.9)
Annotations what changed, so a step in a chart is explicable