Electronic Data Collection and Analysis System
Yin Foo, Des; Foley, Margaret
E-Publications; PublicationNT; E-Books; Report ; 39/1992
1992-08-01
Made available via the Publications (Legal Deposit) Act 2004 (NT).
Date:1992-08
English
Power and Water Authority
Darwin
Report ; 39/1992
application/pdf.
Check within Publication or with content Publisher.
https://hdl.handle.net/10070/229024
https://hdl.handle.net/10070/673447
Technical Report WRD92039 Viewed at 15:07:17 on 29/07/2010 Page 180 of 192. Marking both ends of the set; subtracting LHO from the set ( - , "LHO", ENTER )i Multiplying set by -1 {*, "-1", ENTER )i Enter new info. line ( I, "Logged DrawDowns RNXXXXX, DD made =0 at hh:mm:ss dd:mm ..... ) set {L} is now same as LDD above ( ii) To apply the Barometric conversion Read in tte Barometric pressure data; call it set {B) ; find its' value at to (same to as above) i . e. BO Mark both ends of {B}; subtract 80 from set ( -, "BO", enter)i Enter new info line ( I, "change in barometric pressure from ValUE) at to .. "; {B} is novi Be as above; convert {Ll to BCDD as per (4) by adding {B} to {L} (PROCESS, ENTER, 2 SETS, ENTER, L, ent, B,ent, L+B, ent, c: 1 and make the information line "Logged DD corrected for Barometric Pressure Changes, RNXXXXX" ) Note tha't if {Ll and {B} are not at same times, currently (Dec '91) automatically interpolates values of {B} for [l~} times, which can lead to errors - particularly if [L} either pre- or post- dates {B}. If this happens, the meaningless data must be deleted from {L}. The best ~!ay of spotting this is to take a "TIME SERIES" from {Ll and "INTERPOLATE" [B} onto the time series. call the set "'I'" and enter the info line "Barometric changes compared to to, at LDD times"; Go through (T) (get the cursor to {T} by PgUp and expand the scales - any problems will usually be apparent. If all {T} is OK, then add it to {B}; If all {T} is not OK then :