As a first step, it would be very useful to have a documentation for this function (interpolation). It is straightforward to use the function but I would like to see a description on what it does mathematically.
Specially the options available for the input parameters mode, ignoreMissingData and stats. The best would be if you could update the document "Getting to Know InfoTables". For example, what is the impact of changing ignoreMissingData to true, what are the methods behind TAVG, LAST, ets on stats and so on.
mode: 'ROWCOUNT' /* STRING */,
ignoreMissingData: false /* BOOLEAN */,
stats: 'TAVG' /* STRING */,