private void ProcessAvg(ElementState state, IEnumerable <Output> outputs)
{
foreach (var output in outputs)
{
var source = output.Parameters.StringValue("source-property");
var ts = output.Parameters.TimeSpanValue("timespan");
var result = _analysis.Avg(state, source, ts, true);
state.Output.AddOrUpdate(output.Name, result);
}
}