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- Map label: ROCKVILLE MARYLAND ME- 77 7 30 39 0 0 450 450GPMII/2 04/81
- there were 40 items read from the header
- [ 3] planimetric reference system: 1
- [ 8] elevation measurement units code: 2
- [10] ground coordinates
- NW (305496.500000, 4332850.500000) NE (316303.300000, 4332590.000000)
- SW (305153.000000, 4318977.000000) SE (315978.900000, 4318716.700000)
- Accuracy code: 1
- Spatial Resolution: 30.000000, 30.000000, 1.000000
- [15] map size is 1 x 372
- Using vertical exaggeration of: 1.000000
- number of rows 471, number of columns 372
-