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No number for "Statusoftherawspectraw/ttheirtheoreticalandmeasurednoiseinall<B>CLASS</B>versions.<SPANCLASS="MATH">$t$</SPAN>istheintegrationtime,<SPANCLASS="MATH"></SPAN>isthefrequencyresolution.Thetheoreticalnoiseiscomputedfrom<SPANCLASS="MATH"></SPAN>,<SPANCLASS="MATH"></SPAN>,and<SPANCLASS="MATH"></SPAN>(inHz):<SPANCLASS="MATH"></SPAN>.Themeasurednoiseiscomputedbythe<SPANstyle="font-family:monospace">BASELINE</SPAN>command,excludingthewindowswithsignal."

No number for "SameasTable,fortheaveragedspectraproducedbythecommand<SPANstyle="font-family:monospace">AVERAGE</SPAN>in<B>CLASS</B>versionfeb21.Wecombinethe3spectraeitherinasinglecall(100+101+102),orin2callswithanintermediateaverage(100+101,then(100+101)+102).This<B>CLASS</B>versiongivesunexpectedresults(inred).1)Afterasingleaverage,thesystemtemperature,andthusthetheoreticalnoise,isunderestimatedbyafactor<SPANCLASS="MATH">$sqrt{2}$</SPAN>,butthemeasurednoiseiscorrectastheweightedaverageusedproperweights.2)whenaveraginginseveralcalls,theerroronthesystemtemperaturepropagatesalsototheweightedaverage;wecanshowthatthemeasurednoiseisdividedby<SPANCLASS="MATH"></SPAN>insteadof<SPANCLASS="MATH"></SPAN>(<SPANCLASS="MATH"></SPAN>overestimate)afterthe2-averagesequence."

No number for "SameasTable,fortheaveragedspectraproducedbythecommand<SPANstyle="font-family:monospace">AVERAGE</SPAN>in<B>CLASS</B>versionmar21."
