WEBVTT

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An F twenty-five file is not simply

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another rectangular survey spreadsheet. It contains instrument

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context, station information and repeated drop records.

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Preserve that structure in the original evidence.

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The catalogue describes unit and history records,

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sensor information and test setup. A numerical

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reading means little if its force, distance

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or deflection unit has been misunderstood. Station

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records connect location and time to subsequent

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drops. Moving a drop into another station

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can change its engineering meaning even when

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the individual numbers remain unchanged. There is

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an important scope limit: the current seeded

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F twenty-five definition lists descriptive text fields.

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That catalogue entry alone does not establish

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a complete native instrument parser or calibration

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check. Do not assume the tabular F

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W D schema and native F twenty-five

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records are interchangeable. Use the ingestion route

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supported by your deployment, and confirm the

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actual processing result before relying on coverage.

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Keep the untouched instrument file alongside any

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derived export and document the conversion. Review

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station, units and drop attribution from source

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evidence. A successful upload must never stand

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in for checks that were not performed.