PACKWHEN — CONCEPTUAL CALCULATION RECORD
Not an official measurement method, legal determination or compliance certificate.

Invented example, volume units consistent throughout:
Parcel A: outer 12; sales packs 9; empty 3; ratio 25%.
Parcel B: outer 8; sales packs 2; empty 6; ratio 75%.
Mean of percentages: (25 + 75) / 2 = 50%.
Ratio of sums: (3 + 6) / (12 + 8) = 45%.
Neither summary changes Parcel B's individual 75%.

BLANK RECORD
Parcel ID / date:
Packaging layer:
Outer-volume value and unit:
Basis / dimensions / source:
Each sales-pack ID, volume and same unit:
Total sales-pack volume:
Uncertain or missing dimensions:
Filling-material description (not a sales-pack volume):
Empty-space calculation:
Ratio and rounding used:
If summarised, exact aggregation method:
Applicable obligation / date / source still to verify:
Fit and protection evidence still needed:
Reviewer / unresolved questions:

https://opportunity-africa.com/one-parcel#two-parcels