What is the organization of the PAMAP tile structure in Pennsylvania?
PAMAP data are organized into tiles, which do not have gaps or overlaps. Each tile represents 10,000 feet by 10,000 feet on the ground. The coordinate system for tiles in the northern half of the state (6679 tiles) is Pennsylvania State Plane North (datum: NAD83, units: feet); tiles in the southern half of the state (6736 tiles) are in Pennsylvania State Plane South. A tile name is formed by concatenating the first four digits of the State Plane northing and easting defining the block’s northwest corner, the State identifier “PA”, and the State Plane zone designator “N” or “S” (e.g. 45001210PAS).
