Accessing data using CPT (ingrid imposes a limit of 3999 points in the degrees-east grid)

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$partialdiff sub Sh$ [ Hydromet Seasonal_Forecast Precipitation hindcast_date ]

Sh grid: /Sh (days since 1960-01-01) ordered [ (Jan 1981) (Feb 1981) (Mar 1981) ... (Nov 2010)] N= 359 pts :grid
Forecast Lead Time in Months grid: /L (months) ordered [ (2.5)] :grid

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CPTv10+