Calculates daily maximum-8-hour ozone from ozone observation data without printing plot
Usage
dm8n_np(
df,
colid = 1,
colio = 2,
starthour = 0,
endhour = 16,
nh = 6,
nc = 14,
na.rm = TRUE,
outputmode = 1
)Arguments
- df
dataframe of time series for ozone and other related parameters.
- colid
column index for date-time. By default, it equals to 1.
- colio
column index for ozone. By default, it equals to 2.
- starthour
numeric, start hour for calculating 8-hour ozone. By default, it equals to 0.
- endhour
numeric, end hour for calculating 8-hour ozone. By default, it equals to 16 which means averaging ozone between 16~23.
- nh
numeric. The number of effective hourly concentrations per 8-hour period.
- nc
numeric. The number of effective 8-hour average concentrations per day.
- na.rm
logical. Should missing values (including NaN) be omitted from the calculations?
- outputmode
numeric, the format of the output, possible value: 1 or 2. See 'value' for the results of filling in 1 or 2.
Value
a dataframe depends on the value of 'outputMode'. Value 1 will output 1 list which incudes 1 table (maximum-8-hour ozone). Value 2 will output 1 list which contains 4 tables (8-hour ozone, statistics of the number of effective hourly concentrations in each 8-hour average concentration, statistics of the number of effective 8-hour average concentrations in each day, maximum-8-hour ozone).