Atmospheric transmission for ALMA band 9
In the next figure the atmospheric transmission in the ALMA band 9 frequency range (600-720 GHz) is shown. At this atmospheric window you need submillimeter weather conditions to have atmospheric transmissions higher than 0.4. For a more detailed view of the specific atmospheric absoprtion within the window, please check our atmospheric transmission calculator. To have an idea on the fraction of time with sub-mm conditions over the Chajnantor plateau, check our statistics.