Campbell Scientific RTMC Pro Real-Time Monitor and Control Professional Software - Manual (Page 34)

RTMC Pro
StdDev Returns the standard deviation of up to the last
specified number of values.
StdDevOverTime Returns the standard deviation of the specified
value over time.
StdDevOverTimeWithReset Returns the standard deviation of the specified
value since the function was reset.
Total Returns the total of all values that it has
considered.
TotalOverTime Returns the total of all values whose timestamps
are greater than the newest timestamp minus the
specified interval.
TotalOverTimewithReset Returns the total of all values since the function
was reset.
ValueAtTime Returns the oldest value in a set of values from a
specified time interval.
2.4.12 Expression Builder
The Expression Builder is opened by pressing the calculator button next to a
Select Data field. It can be used to create complex expressions containing
functions, start options, aliases, and/or valuesynchs.
The Expresssion Builder tab is used to build the expression. You can type in
this window directly, press the Browse button at the bottom to browse your
data sources for a data value to be added to the expression, and use the
Functions side tab to add function(s) to the expression. Any errors (i.e.,
undeclared variables, mismatched parenthesis, missing function parameters) in
the Expression Builder tab will be indicated in red.
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