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This transform aggregates a shorter timestep to a longer timestep, eg. aggregates daily data to monthly or yearly using one of the aggregation methods described in Table 1.
The percentile is a statistical measure, used to indicate the value below which a given percentage of data falls. For example, the 20th percentile is the value below which 20% of data may be found. So, if you configure < 20 percentile, this refers to the smallest 20% of all values.
This window works in a similar way to the Number range transform. The values entered must be real numbers between the range 0 and 100.
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| Note: When choosing a yearly time-step, you must also specify the start date of the water year. |
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- Enable the Start date checkbox only. This will display all values from the date specified to the last date in the time series;
- Enable the End date checkbox only to display all values from the first date in the time series to the specified end date; and
- Enable both the Start Date and End Date checkboxes to specify either a range;single date range, or when specifying multiple different date ranges, you can enable/disable a combination of start and end dates.
Figure 4. Date range transform
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