Percent Bad (PerBad)
This algorithm performs the following calculation:
percent_bad = duration_bad / interval_length.
Where:
duration_bad is the result from the DURBAD algorithm, calculated using the interval supplied to PERBAD algorithm.
Interval_length is the entire sample interval, the quality setting must be All.
The time is returned in seconds. No returned value will ever be uncertain or bad. Each interval’s value is returned with the timestamp of the start of the interval. Qualities are good, calculated.
This algorithm does not define what is bad quality data (it includes uncertain quality data). You need to use a quality filter of All for the algorithm to work correctly.
Further Information