| Digital stereo images are separated either spatially, radiometrically or temporally. |
| These data were radiometrically balanced using year-2000 SPOT VGT data folllowing the procedure in Olthof et al. |
| The Katangan has been radiometrically dated at more than 620 million years in age. |
| Level-1: Internal intermediate format, maintained as 13 sub-images, but radiometrically corrected using calibration files. |
| During the image production, the raw data were radiometrically adjusted and enhanced. |
| These files are geometrically and radiometrically corrected and are reprojected into latitude and longitude co-ordinates. |
