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3.5.3 Statistical field measurement display.
The Statistics tab shows the statistical data relevant to the loaded measurement file.
To the right of this graph two values have been calculated:
Mean: mean value of field variation over time.
Standard Deviation: standard deviation of this variation.
Note 3 : use the Bar Number list box to establish the number of bars to be displayed on
the graph. This number is automatically set at 50 but it can be modified to between 10
and 200.
It is possible for the user to define a sub-sample of statistics. Select the Partial checkbox
to the right of the graph. The interval of measurements to be considered can now be
defined:
Start: first measurement of the interval
End: last measurement of the interval
Upon each change of interval limits (as long as this is valid), the graph, mean values and
standard deviation are refreshed. It is possible to decrease or increase the number of bars
in the graph.
Figure 31 : Statistical display of mean and standard deviation for a measurement interval
By selecting the checkbox Global, the statistical display is determined from the total
number of measurements.
Figure 30 : statistical field data over time
defined by the user.
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