The insertion loss of DUT14 on 1296 measured with SDR-IP mixers and HP generators.
(March 10 2013)
Sorry, this screen dump is lost.
Observed signal levels:

 none         DUT14
115.3802     115.2943
115.3794     115.2968
115.3823     115.2992
115.3829


      averages 
115.3812     115.2968

Standard deviations of individual measurements
 0.0017      0.0024

Standard deviations of averages
 0.0008     0.0014

Standard deviation on insertion loss 0.0016

IL = 115.3812 -  115.2968 = 0.0844 dB

Error limits (3 sigma) +/- 0.0049 dB

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