Logistics · The lead time record · Element
The variability
How much the time varies, which is the number that actually matters.
The part
What it is
Reporting the spread alongside the average is the whole point. An average with no spread invites planning that will fail regularly.
The upper percentile is what safety stock has to cover, and it is the number planning should use.
The smallest level
The attributes it carries
Each attribute is one of the framework’s shared types. What a date is, and how it is written, is defined once for the whole model — the note here says what it means in this particular place.
Upper percentile
The time that covers most cases, which is what planning should use.
Duration shared type