FAT is a system connecting all timing components electronically including the starter’s signal, starter’s signal receiver, finish line camera and timing software. Non-FAT performances in events 200m and shorter are not eligible for this site’s official rankings lists. The precise difference between a non-FAT time and its precise time (that FAT will give) is not consistent. Since small differences in times can make a significant difference in a ranking, it is widely unfair to compare non-FAT performances in shorter distances. Effective 2016, performances for non-FAT, 300 and 400 meter races will be adjusted by the IAAF accepted standard of 0.24 seconds.