What is the cadastral number for the sectional map in the 1:250 scale in the top-right quadrant for coordinates 14°49'N, 120°54'E?

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The key idea is how cadastral numbering pins down an exact map cell by layering location, map sheet, and sub-quadrant details. The code starts with the map sheet identified by the coordinates, then notes the section, followed by the quadrant (northwest in this system), and finally a sub-quadrant number that specifies the exact quarter within that quadrant.

For the coordinates 14°49'N, 120°54'E on the 1:250 sectional map, the top-right portion of the section is designated as the fourth sub-quadrant within the NW part of section 1-A. That makes the full cadastral identifier CM 14°49'N-120°54'E sec. 1-A-NW-4. This exact sequence and the final sub-quadrant number uniquely locate the map cell.

Other sub-quadrants (1 through 3) would refer to the other parts of the same NW quadrant, but they do not correspond to the top-right area described.