In order to be able to interpret the readings correctly, each one shall contain the following properties:
| Variables | Meaning | Format | Example |
| time | The exact moment when the reading was taken. | Datetime specified by ISO 8601 format as string | "2021-11-03T15:00:00Z" |
| asset | The ID of the asset associated with the reading. | String (names are case sensitive) | "Pipe1" |
| metric | What is being sent. | string | "flow" |
| value | The value of the reading. | number (decimal separator must be a dot) | 1.7 |
| unit | How the value is being simulated in Qatium (there is no support for unit conversion). | string | "l/s" |