The insertion loss of DUT7 on 1296 measured with SDR-IP mixers and HP generators.
(March 10 2013)



Observed signal levels:


 none         DUT7
115.3191    115.2602
115.3157    115.2532
115.3154

      averages 
115.3167    115.2567

Standard deviations in individual measurements
 0.0020      0.0050
Very few points, use the average standard deviation
which is 0.0038 (rms)

Standard deviation of averages
 0.0022       0.0027

Standard deviation of average difference 0.0035

IL = 115.3167 -  115.2567 = 0.0600 dB
Standard deviation 0.0035 dB
Error limits (3 sigma) +/- 0.0105 dB

Errors are estimated from far too few data points so
the error estimation for this particular measurement is 
very uncertain.
There are many measurements in this series so the statistics
of all the errors estimates will give a good idea about errors.