#7 Sea Level Pressure
Sea Level Pressure in 1/10 of a millibar, with the leading "9" or "10" removed.
If the string starts with a 0 through 4, prefix a "10", otherwise prefix a "9". In the example,
this is 1015.0 millibars.
METAR reports the pressure only to the nearest millibar, so all the numbers end with "0".
This pressure is the QNH pressure, which is corrected to sea level.
#8 Pressure Trend
Shows the unsigned change in pressure over the last 3 hours in 1/10 of a millibar. It is
followed by a graphic showing the change trend.
For example, "4/" means that the pressure went up by 0.4 millibars in the last 3 hours.
METAR reports do not contain pressure trend, so this is blank.
The following figure shows the available symbols.
Figure 72 SWS Pressure Trend Symbols
#9 Station ID
• METAR stations use a 4-character string.
• SYNOP stations use a 5-digit number.
#10 Dew Point
Dew Point (°C).
5.8.2
SWS Output Options
When displaying an SWS product in the Quick Look Window, you can configure what data
is displayed using the SWS Tool.
You can start SWS Tool from Quick Look Window > OPT or from Product Output Menu >
Opts.
For all selected data fields, IRIS displays the data and stores the data in the file.
Chapter 5 – Configuring and Scheduling Optional IRIS Products
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