Components kept separate, in the value's unit (literature SCHEMA.md, UNCERTAINTY_CALIBRATION.md): effective = max(sqrt(max(printed, reading, method)^2 + composition^2 + conversion^2), scatter). The method floor is the robust between-study scatter of the method class in ORCHID (calibrated) or a documented prior; printed values and printed uncertainties are unchanged.
Uncertainty budget of the literature values of NaTe3
Value
Unit
Printed
Reading
Method (class, basis)
Composition
Scatter
Conversion
Effective
-167.4
kJ/mol (basis unstated)
0.05
14 (unknown, calibrated)
14
-180
kJ/mol (basis unstated)
0.05
15.6 (model_calculated, calibrated)
15.6
Sources
Yang Chen, Yajun Liu, Maoyou Chu, Lijun Wang, Phase diagrams and thermodynamic descriptions for Na–Te and K–Te binary systems, Journal of Alloys and Compounds 588, 605-610 (2014). doi:10.1016/j.jallcom.2013.11.094