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Changes in reported values and uncertainties (3σ) of NIST radiance temperature calibrations
| Value | Change of value | Quoted uncertainty (3σ) | |
|---|---|---|---|
| Tnist–T68 | 1968 | 1990 | |
| 800 °C | −0.16 °C | ±0.5 °C | +0.5 °C |
| 1100 | −0.26 | 0.6 | 0.6 |
| 1400 | −0.39 | 0.8 | 0.7 |
| 1800 | −0.60 | 1.3 | 1.2 |
| 2300 | −0.93 | 2.0 | 1.8 |
