Some data points obtained with the samples of Types J and K were
deemed unreliable—the timer either did not trip at all or did take unreasonably a
long time before it tripped. In order to prevent the rest of data from being
contaminated, those data points were discarded. Eighteen data points for Type J
detectors and 17 data points for Type K were used in the analysis. Figs. 17–20 show
the RTI value of each sample of the non-restorable detectors used in the test
program and the average RTI value of all the test samples per type. The figures show
that detector Types H and K have quite higher degrees of the standard deviations
compared with those of Types I and J.