Tics have been added at every quadrangle corner. Vertices have been added to every arc at 1.5' intervals to reduce shape changes due to projection of the data. All character item values are now in upper case to conform with other data sets in this suite. Arcs are coded with latitude or longitude in decimal degrees. This is an alphanumeric combination of degrees north and west with a row column index applied to each 1 degree by 1 degree area.
Values are in decimal degrees.
Q15 - Indicates if arc is also a boundary for a 15 minute quad. 0 - arc is not a 15 min. 0 - arc is not a 7.5 min. Each quad is annotated with the quad name. DNR makes no guarantee or warranty concerning the accuracy of information contained in the geographic data.