Record pack-out version and route conditions for seasonal comparisons; do not treat one year's observations as cause or a universal rule.
Record the reference pack-out by version. Compare product start, ambient conditions, route, openings and measurements in summer and winter trials; change one factor at a time. A one-year difference alone proves neither seasonality nor cause.
Results may vary by season; changing layouts casually weakens comparison.
Record the pack-out version.
Limit the conclusion. Do not assign cause from difference alone.
Sources and correction policy for this article
