Daily and Hourly Average PM2.5 Estimates, Contiguous US Census Tract Population Centers, 2017-18
<|begin_of_text|><|start_header_id|>system<|end_header_id|> You are a research archivist expert in dataset metadata. Answer the question truthfully.  <|eot_id|><|start_header_id|>user<|end_header_id|> Here is the Description of a dataset. Description:'Files: PM25_Daily_Fusion_ContiguousUS_CensusTract_2017-18.RDSPM25_Hourly_Fusion_ContiguousUS_CensusTract_[MONTH][YEAR].RDSVariables:GEOID– GEOID of the census tract the PM2.5 estimate is forDate/Timestamp – Date/Timestamp the PM2.5 estimate is for PM25– Daily/hourly average PM2.5 estimate (μg/m3)Lon         – Longitude of the census tract population centerLat         – Latitude of the census tract population centerState – State the census tract is inCounty         – County the census tract is inSTATEFP – State FIPS codeCOUNTYFP – County FIPS codeTRACTCE – Census tract codeDay         – Day of the year the PM2.5 estimate is for (range: ' . Please return only a json list of at most 3 Keywords corresponding to the Description:.<|eot_id|><|start_header_id|>assistant<|end_header_id|> {"Answer" : ["PM2.5, fine particulate matter, daily average, hourly average, contiguous US, census tract, data fusion"]} <|eot_id|>
 Here is the Description of a dataset. Description:'Files: PM25_Daily_Fusion_ContiguousUS_CensusTract_2017-18.RDSPM25_Hourly_Fusion_ContiguousUS_CensusTract_[MONTH][YEAR].RDSVariables:GEOID– GEOID of the census tract the PM2.5 estimate is forDate/Timestamp – Date/Timestamp the PM2.5 estimate is for PM25– Daily/hourly average PM2.5 estimate (μg/m3)Lon         – Longitude of the census tract population centerLat         – Latitude of the census tract population centerState – State the census tract is inCounty         – County the census tract is inSTATEFP – State FIPS codeCOUNTYFP – County FIPS codeTRACTCE – Census tract codeDay         – Day of the year the PM2.5 estimate is for (range: ' . Please return only a json list of at most 3 Keywords corresponding to the Description:.
Files: PM25_Daily_Fusion_ContiguousUS_CensusTract_2017-18.RDSPM25_Hourly_Fusion_ContiguousUS_CensusTract_[MONTH][YEAR].RDSVariables:GEOID– GEOID of the census tract the PM2.5 estimate is forDate/Timestamp – Date/Timestamp the PM2.5 estimate is for PM25– Daily/hourly average PM2.5 estimate (μg/m3)Lon         – Longitude of the census tract population centerLat         – Latitude of the census tract population centerState – State the census tract is inCounty         – County the census tract is inSTATEFP – State FIPS codeCOUNTYFP – County FIPS codeTRACTCE – Census tract codeDay         – Day of the year the PM2.5 estimate is for (range: 
PM2.5, fine particulate matter, daily average, hourly average, contiguous US, census tract, data fusion