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    "description": "**Author**:   \n**Source**: Unknown - Date unknown  \n**Please cite**:   \n\nThe data are a subsample of 500 observations from a data set\nthat originate in a study where air pollution at a road is\nrelated to traffic volume and meteorological variables,\ncollected by the Norwegian Public Roads Administration. The\nresponse variable (column 1) consist of hourly values of the\nlogarithm of the concentration of PM10 (particles), measured at\nAlnabru in Oslo, Norway, between October 2001 and August 2003.\nThe predictor variables (columns 2 to 8) are the logarithm of\nthe number of cars per hour, temperature $2$ meter above ground\n(degree C), wind speed (meters\/second), the temperature\ndifference between $25$ and $2$ meters above ground (degree C),\nwind direction (degrees between 0 and 360), hour of day and day\nnumber from October 1. 2001. Submitted by Magne Aldrin\n(magne.aldrin@nr.no). [28\/Jul\/04] (19kbytes)\n\nNote: description of data is from this website\nhttp:\/\/lib.stat.cmu.edu\/datasets\/\n\n\nInformation about the dataset\nCLASSTYPE: numeric\nCLASSINDEX: none specific",
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    "uploader": "Joaquin Vanschoren",
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    "visibility": "public",
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    "contributor": "Magne Aldrin",
    "date": "2014-09-29 00:07:50",
    "update_comment": "set target feature",
    "last_update": "2014-10-07 01:17:37",
    "licence": "Public",
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    "url": "https:\/\/www.openml.org\/data\/download\/52634\/pm10.arff",
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