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 ErTe2
Value
Unit
Printed
Reading
Method (class, basis)
Composition
Scatter
Conversion
Effective
-132.921
kJ/mol-atom
5.000e-4
9.966 (dft, calibrated)
9.966
-106.39
kJ/mol-atom
5.000e-5
9.966 (dft, calibrated)
9.966
-105.846
kJ/mol-atom
5.000e-4
9.966 (dft, calibrated)
9.966
Sources
S. Bennoui, Y. Djaballah, V. Vassiliev, A. Belgacem-Bouzida, Thermodynamic Study of Er-Bi and Er-Te Systems by Combination of First-Principles Calculations and the CALPHAD Method, J. Phase Equilib. Diffus. 43, 126-138 (2022). doi:10.1007/s11669-022-00947-8