Territory Stories

Electronic Data Collection and Analysis System



Electronic Data Collection and Analysis System


Yin Foo, Des; Foley, Margaret


E-Publications; PublicationNT; E-Books; Report ; 39/1992




Made available via the Publications (Legal Deposit) Act 2004 (NT).





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Power and Water Authority

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Report ; 39/1992

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Technical Report WRD92039 Viewed at 15:07:17 on 29/07/2010 Page 177 of 192. D5 _ 2 LINEAR RE-CALIBRATION OF LOGGED VALUES BY MANUAL READINGS USING "DATMAN" Read in i;he Barometrically corrected (as above) Logged Drawdown (BCDD) (data set (L}) and the manual readings (entered throu~fh 'LOGIN') ({Z}), ("Remove" any other sets) ; Both should be zero at some time, to; If both sets are not close, Recalibration can be considered, with consideration of (A) and (B) in 2.1 above; Select the Manual readings ,"hich Ivill be included in the "True" set by "'hich the calibration will be done. Do NOT use manual readings from times for which : (i) there is no interpolation Logged data ( "DATMAN" , s 1 inear time of the logged data may be inappropriate); (ii) the logged data rapidly; appears suspect, or is changing DO use manuals which are from times where the logged drawdolm is relatively steady i DO use manuals which cover a significant range of the overall Drawdmm (as in (A) above). It is pro::Jably desirable to use numbers of points at any given 'steady' level according to their assumed reliability it rna" be desirable to add some earlier zero values to the J. manuals - which can be done through 'LOGIN'; copy {Z} as {T} (If set to reeal. BY") i Delete the unsuitable points from {T}, which is now the UTrue fl set; press L for caLibrate;

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