data before November 1975 received from authority H8 all data received via TOGA instrument type:OTT standard analog (OTT) 1967-11/1975; (Nov 1975 - Jan 1987 )Fischer and Porter Analog-to-Digital Recorder (ADR) (primary,Jan 1987-present) Leupold and Stevens Analog-to-Digital Recorder (ADR); (backup,Jan 1987-present) Handar Encoder (ENC) *used as primary gauge for 1990-1992
Documentation added 1997-12-09
Revised data for 1967-81 received from the UHSLC. The Revised Local Reference details are no longer relevant. The entire series is relative to the French "zero de reductions des sondes 1961." The 1975-4/1981 U ich were originally linked to the UH staff have now been adjusted to be relative to the French Zero 1961.
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