This function makes repeated calls to airnow_downloadHourlyData to obtain data from AirNow. All data obtained are then combined into a single tibble and returned.
Parameters included in AirNow data include at least the following list:
Passing a vector of one ore more of the above names as the
parameters argument will cause the resulting
tibble to be filtered to contain only records for those parameters.
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vector of names of desired pollutants or NULL for all pollutants
desired start date (integer or character representing YYYYMMDD[HH])
desired number of hours of data to assemble
Tibble of aggregated AirNow data.
As of 2016-12-27, it appears that hourly data are available only for 2016 and not for earlier years.
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## Not run: tbl <- airnow_downloadParseData("PM2.5", 2016070112, hours = 24) ## End(Not run)
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