Track extremes on routes with day-night swings

An average can hide daytime warming and nighttime cooling. Match product readings with time, parking and handoff records.

14 November 2023Updated 23 September 2026

Short answer

Record day and night route conditions alongside product readings; do not rely on a daily average alone. Check that the sensor represents the product's location. If overnight vehicle holding or warming appears in the record, escalate it under the product's acceptance procedure.

Changing conditions over a day may disappear in a single average. Track overnight parking, morning loading and daytime stops on the same route timeline.

Put the measurement in context

Place the product-zone sensor appropriately; vehicle-air readings alone do not prove product condition. Record start, stop, delivery and holding times.

Review maximum and minimum readings

Use the timestamped trace to find when the highest and lowest readings occurred. Link the instrument's range and calibration status to the record.

Assess overnight holding

Mark when a load remains in a vehicle; do not assume the parking location or cover conditions. If a deviation occurs, follow the product procedure and leave the decision to the authorised responsible person.