Time Pattern Editor

Create or edit Time Pattern objects.

Icon	Command	Shortcut Key	Toolbar
	STORMSWMMEDITTIMEPATTERNS

Time Patterns allow external dry weather flow (DWF) to vary in a periodic fashion. They consist of a set of adjustment factors applied as multipliers to a baseline DWF flow rate or pollutant concentration. The different types of time patterns include:

Monthly - one multiplier for each month of the year.
Daily - one multiplier for each day of the week.
Hourly - one multiplier for each hour from 12 AM to 11 PM.
Weekend - hourly multipliers for weekend days.

Each time pattern must have a unique name, and there is no limit on the number of patterns that can be created. Each dry weather inflow, either flow or quality, can have up to four patterns associated with it, one for each type listed above.

In order to maintain an average dry weather flow or pollutant concentration at its specified value (as entered on the Inflows Editor), the multipliers for a pattern should average to 1.0.

Procedure

The Time Pattern Editor displays. Here you can take various actions.

Option	Description
Time Pattern Name	Enter a time pattern name.
Time Pattern Selector	Select the time pattern to edit.
Add	Click to add a new time pattern to the project.
Delete	Click to delete a time pattern from the project.
Type	Select the type of time pattern being specified.
Description	Add an optional comment or description of the time pattern.
Multipliers	Monthly - One multiplier for each month of the year. Daily - One multiplier for each day of the week. Hourly - One multiplier for each hour from 12 midnight to 11 PM. Weekend - One multiplier for each hour from 12 midnight to 11 PM.
OK Button	Click to accept the current entries.
Cancel Button	Click to cancel the function.