Function to screen dissolved oxygen data within the Everglades Ecosystem prior to evaluating compliance with established water quality standards.

DO.Screening(
  DateTime,
  DO,
  Temp,
  data,
  hour.lims = c(6, 18),
  max.DO = 20,
  temp.lims = c(5, 20)
)

Arguments

DateTime: as.POSIXct date and time
DO: Dissolved Oxygen Concentration
Temp: Surface water temperature
data: data.frame() with DateTime (DateTime.EST), Dissolved Oxygen (concentration; DO) and Temperature (Temp) data.
hour.lims: min and max hour to capture "day-time" DO
max.DO: Limit to the maximum observed DO for the system
temp.lims: limits to water temperature data that seem reasonable based on period of record.
...: specify other parameters as needed (min.hour,max.hour,max.DO,min.Temp,max.Temp)

Value

DO.Screening() assumes the data has a "DateTime.EST" field (date and time stamp), "DO" Field and "Temp" field to determine suitable data. Returns a "UseData" response.

Examples

if (FALSE) {
# data=data.frame(DateTime.EST=as.POSIXct(c("2015-05-01 08:00","2015-10-15 12:00","2015-10-15 5:00")),DO=c(15,2,3),Temp=c(18,27,3))
# data$UseData=DO.Screening(DateTime.EST,DO,Temp,data)
# data
}