| Description: The unit_id attribute provides a character or character string which serves as an abbreviation for, or symbol representing, a unit of measure. |
| Namespace Id: pds | Steward: pds | Class Name: Units_of_Spectral_Irradiance | Type: UTF8_Short_String_Collapsed |
| Minimum Value: None | Maximum Value: None | Minimum Characters: 1 | Maximum Characters: 255 |
| Unit of Measure Type: None | Default Unit Id: None | Attribute Concept: None | Conceptual Domain: None |
| Status: Active | Nillable: false | Pattern: None |
| Permissible Value(s) | Value | Value Meaning |
| | SFU - *Deprecated* | The abbreviated unit for Units_of_Spectral_Irradiance is SFU |
| | W*m**-2*Hz**-1 - *Deprecated* | The abbreviated unit for Units_of_Spectral_Irradiance is W*m**-2*Hz**-1 |
| | W*m**-2*nm**-1 - *Deprecated* | The abbreviated unit for Units_of_Spectral_Irradiance is W*m**-2*nm**-1 |
| | W*m**-3 - *Deprecated* | The abbreviated unit for Units_of_Spectral_Irradiance is W*m**-3 |
| | W/m**2/Hz | The abbreviated unit of Units_of_Spectral_Irradiance is W/m**2/Hz |
| | W/m**2/nm | The abbreviated unit of Units_of_Spectral_Irradiance is W/m**2/nm |
| | W/m**3 | The abbreviated unit of Units_of_Spectral_Irradiance is W/m**3 |
| | uW*cm**-2*um**-1 - *Deprecated* | The abbreviated unit for Units_of_Spectral_Irradiance is uW*cm**-2*um**-1 |
| | μW/cm**2/μm | The abbreviated unit for Units_of_Spectral_Radiance is μW/cm**2/μm |