R/PurpleAirQC_hourly_AB_00.R
PurpleAirQC_hourly_AB_00.Rd
Creates a pm25
timeseries by averaging aggregated data
from the A and B channels and applying the following QC logic:
Create pm25 by averaging the A and B channel aggregation means
Invalidate data where: (min_count < 20)
No further QC
PurpleAirQC_hourly_AB_00(pat = NULL, min_count = 20, returnAllColumns = FALSE)
pat | A PurpleAir timeseries object. |
---|---|
min_count | Aggregation bins with fewer than |
returnAllColumns | Logical specifying whether to return all columns
of statistical data generated for QC algorithm or just the final |
Data frame with columns datetime
and pm25
.
Purple Air II sensors reporting after the June, 2019 firmware
upgrade report data every 2 minutes or 30 measurements per hour. The default
setting of min_count = 20
is equivalent to a required data recovery
rate of 67
# \donttest{ library(AirSensor) df_00 <- example_pat %>% pat_qc() %>% PurpleAirQC_hourly_AB_00() names(df_00)#> [1] "datetime" "pm25"# }