
44 CHAPTER 4 DATA PAGE
Minimum Data Threshold/Minimum Source Threshold – ese values are used only
if the appropriate Factor Groups setting is chosen (see above). ese values are in hours.
When you have nished setting parameters, click the Calculate AADT/MADT values for
Selected Stations button. DataView will use the existing data to calculate the average an-
nual and monthly values for the selected stations, using parallel stations in the same factor
group as desired. Once nished, the new yearly entries for the selected stations will be
displayed in the list.
In cases where less than a full year’s worth of data is available for one or more stations,
DataView will calculate partial gures where applicable and put zeroes in months where
no data is available.
Adding AADT/MADT Values Manually
In cases where the AADT/MADT values for stations have already been calculated, they can
be entered manually into DataView without having to be recalculated using stored data.
To manually enter an AADT/MADT value, select one or more stations and open the Man-
ual Add menu at top. Fill in the values, including the year, and click Add Manual Record.
(Fields le blank will be recorded as a zero.) e manual record will be added to the list,
assigned to the station(s) that were selected.
Note
Each station may have only one AADT/MADT record per year. To replace a station’s
entry for a year, first delete the existing entry using the Delete link, then either man-
ually add or recalculate the new values for that station.
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