View source: R/PurpleAirQC_hourly_AB_00.R
PurpleAirQC_hourly_AB_00 | R Documentation |
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
library(AirSensor)
df_00 <-
example_pat %>%
pat_qc() %>%
PurpleAirQC_hourly_AB_00()
names(df_00)
plot(df_00, pch = 16, cex = 0.8, col = "red")
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