== F10.7 Index Yearly Average ==
average 188.5 for 56 years from January 1964 through 2019
 s.f.u. = solar flux units = 1e-22 W/m²-Hz
 . {{ attachment:f10.7a.gif | | width=512 }}
 . [[ attachment:f10.7a.gif | click for 1024x1024 image ]]
 . [[ attachment:f10.7.dat | data ]] downloaded from https://omniweb.gsfc.nasa.gov/form/dx1.html
 . [[ attachment:f10.7.ods | open office spreadsheet ]]