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Determination of the mismatch correction function of the NIST photometer by a parabolic fitting from values measured at four different distribution temperatures
| PTB | NIST | |
|---|---|---|
|
| ||
| Td | k*PTB(Td) | k*NIST(Td) |
| 2000 | 1.00173 | 1.00194 |
| 2366 | 1.00098 | 1.00090 |
| 2600 | 1.00068 | 1.00042 |
| 2856 | 1.00000 | 1.00000 |
|
| ||
| a0 | 1.00313 | 1.0129 |
| a1 | 1.4525 × 10−7 | −7.7218 × 10−6 |
| a2 | −4.341 × 10−10 | 1.1248 × 10−9 |
