Kipp&Zonen BSRN Scientific Solar Monitoring System - Manual (Page 177)

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Rectangular Distribution
If the sem i-range is
, then the standard uncertainty, , is given by:
The degrees of freedom (v) for a rectangular distribution are infinite if the sem i-range represents absolute
lim its.
Sensitivity Coefficient
If is a function of , then the sensitivity coefficient, is:
Combined Standard Uncertainty
Effective Degrees of Freedom
Coverage Factor
Expanded uncertainty