{"columns":[{"name":"Kumla gårdsväg S (aktiv) (PM2.5) (ug/m3)","type":"double"},{"name":"Kumla gårdsväg N (aktiv) (PM2.5) (ug/m3)","type":"double"},{"name":"Torkel Knutssonsgatan, urban bakgrund Stockholm (aktiv, urban_bakgrund) (PM2.5) (ug/m3)","type":"double"},{"name":"Norr Malma, regional bakgrund (aktiv, regional_bakgrund) (PM2.5) (ug/m3)","type":"double"},{"name":"datetime","type":"timestamp[ns]"}],"n_rows":31,"rows_kept":31,"cut":false,"text_format":"parquet-jsonl-2026-10-02","bounds":{"document_bytes":16777216,"package_text_limit_bytes":33554432,"package_text_slack_bytes":1024,"rows_first":2000,"rows_last":500,"rows_between":2000,"halvings":0,"cell_chars":16384,"cell_head_chars":4096,"vector_min":64,"vector_head_fixed":16,"vector_head_variable":64,"kv_value_chars":1048576,"nesting_max":64,"binary_text":true},"cells_cut":0,"cells_bad_utf8":0,"cells_raw":0,"cells_binary":0,"cells_binary_text":0,"cells_vector":0,"n_row_groups":1,"reader":"pyarrow 23.0.1, python 3.13","created_by":"parquet-cpp-arrow version 17.0.0","schema":{"fields":[{"name":"Kumla gårdsväg S (aktiv) (PM2.5) (ug/m3)","type":"double","nullable":true,"metadata":null,"children":null},{"name":"Kumla gårdsväg N (aktiv) (PM2.5) (ug/m3)","type":"double","nullable":true,"metadata":null,"children":null},{"name":"Torkel Knutssonsgatan, urban bakgrund Stockholm (aktiv, urban_bakgrund) (PM2.5) (ug/m3)","type":"double","nullable":true,"metadata":null,"children":null},{"name":"Norr Malma, regional bakgrund (aktiv, regional_bakgrund) (PM2.5) (ug/m3)","type":"double","nullable":true,"metadata":null,"children":null},{"name":"datetime","type":"timestamp[ns]","nullable":true,"metadata":null,"children":null}],"parquet":"required group field_id=-1 schema {\n  optional double field_id=-1 Kumla gårdsväg S (aktiv) (PM2.5) (ug/m3);\n  optional double field_id=-1 Kumla gårdsväg N (aktiv) (PM2.5) (ug/m3);\n  optional double field_id=-1 Torkel Knutssonsgatan, urban bakgrund Stockholm (aktiv, urban_bakgrund) (PM2.5) (ug/m3);\n  optional double field_id=-1 Norr Malma, regional bakgrund (aktiv, regional_bakgrund) (PM2.5) (ug/m3);\n  optional int64 field_id=-1 datetime (Timestamp(isAdjustedToUTC=false, timeUnit=nanoseconds, is_from_converted_type=false, force_set_converted_type=false));\n}\n"},"kv_metadata":[["ARROW:schema",{"$cut":{"chars":2552,"head":""}}],["pandas","{\"index_columns\": [\"datetime\"], \"column_indexes\": [{\"name\": null, \"field_name\": null, \"pandas_type\": \"unicode\", \"numpy_type\": \"object\", \"metadata\": {\"encoding\": \"UTF-8\"}}], \"columns\": [{\"name\": \"Kumla g\\u00e5rdsv\\u00e4g S (aktiv) (PM2.5) (ug/m3)\", \"field_name\": \"Kumla g\\u00e5rdsv\\u00e4g S (aktiv) (PM2.5) (ug/m3)\", \"pandas_type\": \"float64\", \"numpy_type\": \"float64\", \"metadata\": null}, {\"name\": \"Kumla g\\u00e5rdsv\\u00e4g N (aktiv) (PM2.5) (ug/m3)\", \"field_name\": \"Kumla g\\u00e5rdsv\\u00e4g N (aktiv) (PM2.5) (ug/m3)\", \"pandas_type\": \"float64\", \"numpy_type\": \"float64\", \"metadata\": null}, {\"name\": \"Torkel Knutssonsgatan, urban bakgrund Stockholm (aktiv, urban_bakgrund) (PM2.5) (ug/m3)\", \"field_name\": \"Torkel Knutssonsgatan, urban bakgrund Stockholm (aktiv, urban_bakgrund) (PM2.5) (ug/m3)\", \"pandas_type\": \"float64\", \"numpy_type\": \"float64\", \"metadata\": null}, {\"name\": \"Norr Malma, regional bakgrund (aktiv, regional_bakgrund) (PM2.5) (ug/m3)\", \"field_name\": \"Norr Malma, regional bakgrund (aktiv, regional_bakgrund) (PM2.5) (ug/m3)\", \"pandas_type\": \"float64\", \"numpy_type\": \"float64\", \"metadata\": null}, {\"name\": \"datetime\", \"field_name\": \"datetime\", \"pandas_type\": \"datetime\", \"numpy_type\": \"datetime64[ns]\", \"metadata\": null}], \"creator\": {\"library\": \"pyarrow\", \"version\": \"17.0.0\"}, \"pandas_version\": \"2.2.2\"}"]]}
[null,null,4.962852,4.351234,"2021-08-01T02:00:00.000000000"]
[null,null,2.869991,2.164497,"2021-08-02T02:00:00.000000000"]
[null,null,1.429737,1.223463,"2021-08-03T02:00:00.000000000"]
[null,null,2.0644,1.283094,"2021-08-04T02:00:00.000000000"]
[null,null,1.906612,1.653782,"2021-08-05T02:00:00.000000000"]
[null,null,2.656017,2.172916,"2021-08-06T02:00:00.000000000"]
[null,null,4.028908,3.355564,"2021-08-07T02:00:00.000000000"]
[null,null,3.94318,3.837395,"2021-08-08T02:00:00.000000000"]
[null,null,5.98719,4.129601,"2021-08-09T02:00:00.000000000"]
[null,null,6.001884,5.403877,"2021-08-10T02:00:00.000000000"]
[null,null,4.867805,4.612488,"2021-08-11T02:00:00.000000000"]
[null,null,5.974129,4.718452,"2021-08-12T02:00:00.000000000"]
[null,null,7.515587,6.053375,"2021-08-13T02:00:00.000000000"]
[null,null,4.612808,4.41008,"2021-08-14T02:00:00.000000000"]
[null,null,2.511532,1.54121,"2021-08-15T02:00:00.000000000"]
[null,null,4.779808,3.195278,"2021-08-16T02:00:00.000000000"]
[null,null,4.669075,3.596375,"2021-08-17T02:00:00.000000000"]
[null,null,3.705395,1.906801,"2021-08-18T02:00:00.000000000"]
[null,null,1.462215,1.370213,"2021-08-19T02:00:00.000000000"]
[null,null,1.972933,1.135494,"2021-08-20T02:00:00.000000000"]
[null,null,1.635239,1.196278,"2021-08-21T02:00:00.000000000"]
[null,null,null,1.345657,"2021-08-22T02:00:00.000000000"]
[null,null,2.320724,1.750425,"2021-08-23T02:00:00.000000000"]
[null,null,2.214615,1.605749,"2021-08-24T02:00:00.000000000"]
[null,null,2.616318,1.648491,"2021-08-25T02:00:00.000000000"]
[null,null,3.106697,2.680878,"2021-08-26T02:00:00.000000000"]
[null,null,4.925873,4.221352,"2021-08-27T02:00:00.000000000"]
[null,null,7.477547,5.997421,"2021-08-28T02:00:00.000000000"]
[null,null,7.689423,6.410011,"2021-08-29T02:00:00.000000000"]
[null,null,6.445618,5.072281,"2021-08-30T02:00:00.000000000"]
[null,null,4.580269,3.669159,"2021-08-31T02:00:00.000000000"]