Variable names for C3S Soil Moisture
====================================================

C3S SM variables as in the netcdf image files (and time series from netcdf images) for different products and versions of C3S

+-------------+---------------------------------+-------------------------------------------+
| name        | Description                     |  Units                                    |
+=============+=================================+===========================================+
| freqbandID  | Frequency Band Identification   |                                           |
+-------------+---------------------------------+-------------------------------------------+
| lat         | Latitude                        | [degrees_north]                           |
+-------------+---------------------------------+-------------------------------------------+
| lon         | Longitude                       | [degrees_east]                            |
+-------------+---------------------------------+-------------------------------------------+
| nobs        | Number of valid observation     |                                           |
+-------------+---------------------------------+-------------------------------------------+
| sensor      | Sensor Flag                     |                                           |
+-------------+---------------------------------+-------------------------------------------+
| sm          | Volumetric Soil Moisture        | [m3 m-3]                                  |
+-------------+---------------------------------+-------------------------------------------+
| time        | Time                            | [days since 1970-01-01 00:00:00 UTC]      |
+-------------+---------------------------------+-------------------------------------------+