The $partialdiff sub M$ root mean sq anom mean $integral dM$ [ IRI Analyses ICPAC Models Montreal CMC2-CanCM4 FORECAST MONTHLY tref ] data are available as a columnar table,
i.e. as multiple columns of data, intended primarily to be read. However,
if you have other intentions for this table, or simply do not like the default choices, you may want to choose from the columnar tables with options.