Long name: 
Level 3
Levels from 0 to 4 have been defined by the remote sensing community to describe the processing level of products. Level 0 represents raw data, while Level 4 data have had the greatest amount of processing applied. Level 3 products are data which have been spatially and/or temporally re-sampled (i.e., derived from level 1 or 2 products). Such re-sampling may include averaging and compositing. The OSI SAF products are L2 and L3 products based on lower level products mainly provided by EUMETSAT.