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 173 of 192. D4. E:XAMPLE OF DATA SET CORRECTION AND RE-CALIBRATION 'rne follOlling example is based on sample data contained on the diskette labelled " DATMAN Example". The files referred to below can be read into and manipulated as described here. The data entered in the file "H-UNCORR.pro" is uncorrected head data, which can be corrected for barometric effects using the barometric pressures recorded in the file "Baro-p.pro". The resulting data can then be converted to drawdm.m and recalibrated using the check data from the file "Chek-r. pro". D4.1 Barometric correction Read the Eiles named H-uncorr. pro and Baro-p, pro into as sets {U} and {B} respectively. (i) select a reference time (TO) - use the first time of {U}. Note the value of the barometric pressure at this time (BO - ) (ii ) Convert {B} to change in barometric pressure compared to that at TO as in (2) above. Mark both ends of the set and press n_n , then type xxxxx and [enter J Nm-l, BO - 0; {iii)Create a new set {C} of barometrically corrected head (as in (3) above) by using {U} as the non-interpolated set and subtracting {B} from it. Highlight "process", [enter], Dr B, highlight "U-B", [enter 1 , C, type "Baro corrected Head", [ en ter 1 . compare the values of {U} and {C} at various times note that CO = UO, and that the difference between the two sets varies between -22 and +18mrn ; <==CHE:CK (iv) SaVEl {C} to disk by highlighting "Write", "Ascii",