# CODE TABLE 6 Data Representation Type
0 ll Latitude/Longitude Grid
1 mm Mercator Projection Grid
2 gp Gnomonic Projection Grid
3 lc Lambert Conformal
4 gg Gaussian Latitude/Longitude Grid
5 ps Polar Stereographic Projection Grid
6 6  Universal Transverse Mercator
7 7  Simple polyconic projection
8 8 Albers equal-area, secant or tangent, conic or bi-polar
9 9 Miller's cylingrical projection
10 10 Rotated Latitude/Longitude grid
13 ol Oblique Lambert conformal
14 14 Rotated Gaussian latitude/longitude grid
20 20 Stretched latitude/longitude grid
24 24 Stretched Gaussian latitude/longitude
30 30 Stretched and rotated latitude/longitude
34 34 Stretched and rotated Gaussian latitude/longitude
50 sh Spherical Harmonic Coefficients
60 60 Rotated Spherical Harmonic coefficients
70 70 Stretched Spherical Harmonic coefficients
80 80 Stretched and rotated Spherical Harmonic
90 sv Space view perspective or orthographic grid
193 193 Quasi-regular latitude/longitude