<page_title> Advanced microwave sounding unit </page_title> <section_title> Instrument characteristics </section_title> <table> <cell> 1 </cell> <cell> 23.8 </cell> <cell> 2 </cell> <cell> 31.4 </cell> <cell> 3 </cell> <cell> 50.3 </cell> <cell> 4 </cell> <cell> 52.8 </cell> <cell> 5 </cell> <cell> 53.596 ± 0.115 </cell> <cell> 6 </cell> <cell> 54.4 </cell> <cell> 7 </cell> <cell> 54.94 </cell> <cell> 8 </cell> <cell> 55.5 </cell> <cell> 9 </cell> <cell> 57.290 </cell> <cell> 10 </cell> <cell> 57.290 ± 0.217 </cell> <cell> 11 </cell> <cell> 57.290 ± 0.3222 ± 0.048 </cell> <cell> 12 </cell> <cell> 57.290 ± 0.3222 ± 0.022 </cell> <cell> 13 </cell> <cell> 57.290 ± 0.3222 ± 0.010 </cell> <cell> 14 </cell> <cell> 57.290 ± 0.3222 ± 0.0045 </cell> <cell> 15 </cell> <cell> 89.0 </cell> </table>
The AMSU has 15 channels between 23.8 and 89 GHz.