Arrays of different size and with `null` values based on requested stations

[basislagerservices]

I'm requesting temperature data for multiple stations at once and noticed that values are sometimes returned as an array of different size.
For requests for a single stations, I usually get an array with one value, but for some combinations I get arrays with 1 or 2 null values.

Example:

echo "**************** FIRST *****************"
curl -s 'https://dataset.api.hub.geosphere.at/v1/station/current/tawes-v1-10min?parameters=TLAM&station_ids=11266&output_format=geojson' | python -m json.tool
echo "**************** SECOND *****************"
curl -s 'https://dataset.api.hub.geosphere.at/v1/station/current/tawes-v1-10min?parameters=TLAM&station_ids=11384&output_format=geojson' | python -m json.tool
echo "**************** BOTH *****************"
curl -s 'https://dataset.api.hub.geosphere.at/v1/station/current/tawes-v1-10min?parameters=TLAM&station_ids=11266,11384&output_format=geojson' | python -m json.tool

The result:

**************** FIRST *****************
{
    "media_type": "application/json",
    "type": "FeatureCollection",
    "version": "v1",
    "timestamps": [
        "2025-06-21T12:10+00:00"
    ],
    "features": [
        {
            "type": "Feature",
            "geometry": {
                "type": "Point",
                "coordinates": [
                    11.706666666666665,
                    47.49944444444444
                ]
            },
            "properties": {
                "parameters": {
                    "TLAM": {
                        "name": "Lufttempertur arithmetisches Mittel",
                        "unit": "\u00b0C",
                        "data": [
                            26.2
                        ]
                    }
                },
                "station": "11266"
            }
        }
    ]
}
**************** SECOND *****************
{
    "media_type": "application/json",
    "type": "FeatureCollection",
    "version": "v1",
    "timestamps": [
        "2025-05-22T13:20+00:00"
    ],
    "features": [
        {
            "type": "Feature",
            "geometry": {
                "type": "Point",
                "coordinates": [
                    15.833333333333334,
                    47.623333333333335
                ]
            },
            "properties": {
                "parameters": {
                    "TLAM": {
                        "name": "Lufttempertur arithmetisches Mittel",
                        "unit": "\u00b0C",
                        "data": [
                            -25.2
                        ]
                    }
                },
                "station": "11384"
            }
        }
    ]
}
**************** BOTH *****************
{
    "media_type": "application/json",
    "type": "FeatureCollection",
    "version": "v1",
    "timestamps": [
        "2025-05-22T13:20+00:00",
        "2025-06-21T12:10+00:00"
    ],
    "features": [
        {
            "type": "Feature",
            "geometry": {
                "type": "Point",
                "coordinates": [
                    11.706666666666665,
                    47.49944444444444
                ]
            },
            "properties": {
                "parameters": {
                    "TLAM": {
                        "name": "Lufttempertur arithmetisches Mittel",
                        "unit": "\u00b0C",
                        "data": [
                            null,
                            26.2
                        ]
                    }
                },
                "station": "11266"
            }
        },
        {
            "type": "Feature",
            "geometry": {
                "type": "Point",
                "coordinates": [
                    15.833333333333334,
                    47.623333333333335
                ]
            },
            "properties": {
                "parameters": {
                    "TLAM": {
                        "name": "Lufttempertur arithmetisches Mittel",
                        "unit": "\u00b0C",
                        "data": [
                            -25.2,
                            null
                        ]
                    }
                },
                "station": "11384"
            }
        }
    ]
}

It might be relevant that this happens with 11384, which shows a wrong temperature measurement.

[afuchs-geosphereat]

Hello!

The array size of parameters is equal to the timestamps arrays size because for every timestamp a parameter value is required. In current mode there should be only one timestamp (simplified said a timestamp within the past 10 minutes), however in this example we have two:

    "timestamps": [
        "2025-05-22T13:20+00:00",
        "2025-06-21T12:10+00:00"
    ],

This is because the latest measurement for station 11384 (Hirschenkogel) is in May. The error is that the station is shown as operational in the tawes metadata

    {
      "type": "INDIVIDUAL",
      "id": "11384",
      "group_id": null,
      "name": "HIRSCHENKOGEL",
      "state": "Niederösterreich",
      "lat": 47.623333333333335,
      "lon": 15.833333333333334,
      "altitude": 1318.0,
      "valid_from": "1994-06-13T00:00+00:00",
      "valid_to": "2026-07-17T10:06+00:00",
      "has_sunshine": false,
      "has_global_radiation": false,
      "is_active": true
    },

although as we can see in the klima metadata it has stopped operation in may

    {
      "type": "INDIVIDUAL",
      "id": 10550,
      "group_id": null,
      "name": "Hirschenkogel",
      "state": "Niederösterreich",
      "lat": 47.62333,
      "lon": 15.83333,
      "altitude": 1318.1,
      "valid_from": "1994-06-13T14:30:00+00:00",
      "valid_to": "2025-05-21T06:20:00+00:00",
      "has_sunshine": true,
      "has_global_radiation": true,
      "is_active": false
    },

I forward the error to the data operations team. Thank you for reporting.

If your use case allows it we recommend to use klima-v2-10min instead of tawes-v1-10min. Klima data is verified but not unfortunately not available in real time (klima has no current mode). For more details see: https://data.hub.geosphere.at/dataset/klima-v2-10min.