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| The general adjustment of NAVD 88 was completed in
June 1991. |
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| This means that bench marks included in the NAVD 88
Helmert |
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| blocking phase (approximately 80 percent of the
total) have final |
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| adjusted heights available. |
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| Bench marks in “stable” areas which were removed
from the |
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| adjustment (denoted as “POSTed”) because older data
did not fit with |
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| the latest data was
incorporated into NAVD 88 during fiscal years |
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| 1992-1993. |
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