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MGAP CPT[Forecast PredErrorVars hindcast_date InputObs CFSv2_AtlPac_sst CrossValHind PearsonR target_date ]
grid: /X (degree_east) ordered (59.75W) to (52.25W) by 0.5 N= 16 pts :grid
grid: /S (months since 1960-01-01) ordered [ (0000 1 Sep 2012) (0000 1 Oct 2012) (0000 1 Nov 2012) (0000 1 Sep 2013) (0000 1 Oct 2013) (0000 1 Nov 2013)] :grid
grid: /L (months) ordered (3.0 months) to (4.0 months) N= 2 pts :grid
$partialdiff sub X$ mean [ MGAP CPT PredErrorVars ] [ X | S L]

CPTv10+ files for $partialdiff sub X$ mean [ MGAP CPT PredErrorVars ]