performance specification digital terrain elevation data
performance specification digital terrain elevation data
performance specification digital terrain elevation data
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MIL-PRF-89020BField ContentsField LengthIn CharactersCharacterStartDescriptionbYYDDD 6 48 *Expiration date of tape.Same format as creation datefield. The date after whichthis tape reel may beconsidered as available forreallocation.A space indicatesunlimited access tothis reel.1 54 *Accessibility.15 8 - This reel iscatalogued (ontape).35 8 - This reel iscatalogued withread key.55 8 - This reel iscatalogued withwrite key.75 8 - This reel iscatalogued withread and write key.Block Count 6 55 *Fixed at zeros.13 61 *Blanks 7 74 Fixed by standard.Note: *These fields, to be defined by the producer, may be left blank.21
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