The table below summarises units and notations depending on the quantities used by the SLSTR products:
| Quantity | Unit | Notation | Description |
| Irradiance | 10-3 W.m-2.μm-1 | IU | spectral irradiance unit |
| Radiance | 10-3 W.m-2.sr-1.μm-1 | LU | spectral radiance unit |
| Time | jd or MJD | jd or MJD | modified Julian date 2000 |
| 10-6s | (1.e-6)s | microsecond | |
| Distance | 10-9m | Nm | nanometre (wavelength) |
| 10-6m | μm | micrometre (wavelength) | |
| m | m | metre | |
| 103m | km | kilometre | |
| Percentage | % | % | percentage |
| Temperature | K | K | degree Kelvin |
| C | C | degree Celsius | |
| Angle | ° | deg | degree |
| rad | rad | radian | |
| Solid Angle | sr | sr | steradian |
| Pressure | hPa | hPa | hectoPascal |
| Ozone | kg.m-2 | kg.m-2 | kilogram per square metre |
| Dimensionless quantities | nc | nc | numerical counts |
| dl | dl | dimensionless | |
| Multiple dimension quantities | md | md | table constituted with different physical parameters having different units |