A question on Pendulum experiment

[jmnk]

^^ Happy New Year to everyone!
anyone with an idea of what that 'amplitude' in the pendulum experiment is to represent? to repeat - I'm wondering about this part of the experiment:
"
Toward the end of that pendulum experiment there's this code:
<average>
<input as="buffer" clear="false">anyGyr</input>
<output as="average" clear="false">avg</output>
<output as="stddev">amplitudeSkewed</output>
</average>
[...]
<divide>
<input as="dividend" clear="false">amplitudeSkewed</input>
<input as="divisor" clear="false">frequency</input>
<input as="divisor" clear="false">frequency</input>
<output as="quotient">amplitude</output>
</divide>
so it seems it is calculating average of gyroscope readings (angular velocity), and its standard deviation. And then uses stdDev/(frequency*frequency) to get amplitude.
frequency is the calculated frequency of the pendulum. What does 'amplitude' calculated that way represent?
"