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.Program concepts 27
the cumulative frequency functions, su, sw stand for the standard deviation of
ui , wi; tf;1-/2 stand for the quantile of the Student's t-distribution [1] with
degree of freedom f = n-1.
S c h a l l d r u c k p e g e l L (t )
w i
P e r z e n t i l p e g e l
L q
w 1 w n
u i
t
0 [ % ] 1 0 0 T
q
Z e i t
About the definition of the parameters specifying the percentile confidence
interval from the level trend
The exceedance ratio q in the percentile level Lq results from the totaling of
the individual exceedance intervals wi over the whole measurement time T,
while ui stands for the individual non-exceedance intervals.
