CPTv10+ files for max [ L , max $partialdiff sub S$ ( MGAP CPT PredErrorVars ) ]

MGAP CPT[hindcast_date Forecast InputObs target_date CrossValHind PearsonR CFSv2_AtlPac_sst PredErrorVars ]
grid: /X (degree_east) ordered (59.75W) to (52.25W) by 0.5 N= 16 pts :grid
grid: /Y (degree_north) ordered (29.25S) to (35.75S) by 0.5 N= 14 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
max [ L , max $partialdiff sub S$ ( MGAP CPT PredErrorVars ) ][ | L X Y]