| 21. | However, an overdetermined ensemble of datum points can also be used.
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| 22. | In process philosophy, datum is obtained through the events of concrescence.
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| 23. | Henceforth, this virtual plane will be called the datum plane .
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| 24. | The maps use the Cape datum as the geodesic reference.
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| 25. | Vertical datums are used to measure elevations or underwater depths.
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| 26. | A different principle is used when choosing a datum for nautical charts.
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| 27. | Datum conversion may frequently be accompanied by a change of grid projection.
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| 28. | To address these, a new datum was developed, designated NAD83.
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| 29. | The principal datum in PCT methodology is the controlled variable.
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| 30. | The historic datum holds that this fort was never attacked.
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