PN42.38a - American National Standard for Performance Criteria for Spectroscopy-Based Portal Monitors Used for Homeland Security
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Amendment 1 addresses an observation made by a user of the standard. The observation raised a concern that misunderstandings may occur due to the common use of “tn” for other calculations. To address the concern, “tn” was changed to “p”. The value, for the number of trials used in by the standard remains the same.
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Historical Base Standard
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