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$partialdiff sub Y$ detrended-bfl min [ Guatemala CC pr ]

Longitude grid: /X (degree_east) ordered (92.6365W) to (87.9636W) by 0.2336449 N= 21 pts :grid
Latitude grid: /Y (degree_north) ordered (18.14487N) to (13.42495N) by 0.2247581 N= 22 pts :grid

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