The difference between PWS and WMOUpdated 2 months ago
The Wittfield Combo is for PWS, but the WittField Suite is for WMO.
A Personal Weather Station or Private Weather Station (PWS) - as opposite to an official weather station run by a governmental institution or agency under the rules of the World Meteorological Organisation (WMO) - is an appliance which collects weather data of your microclimate at the place where you install it.
you can try to set up your PWS close to the recommendations of the WMO, but there is no obligation, and there may be good reasons for you to know your microclimate data rather than standardised weather data.
When you have a greenhouse, it is probably more important for you to know the actual data in there (temperature, humiditdy soil moisture …) rather than standardised values which do not reflect your local reality. Or, when you want to chill out on your balcony or in your garden, you may rather want to know the actual temperature there independent of whether this matches the WMO requirements or not.
Ideally, as per recommendation of the WMO (World Metereological Organization), the main readings of outdoor temperature and humidity, rainfall and wind should be taken at different heights:
temperature 2 m / ~ 6.6 feet above ground
rainfall 1 - 2 m / ~3.3 - 6.6 feet above ground
wind 10 - 15 m / ~33 - 49 feet above ground
in an obstacle-free environment.
For a personal weather station (PWS) it may not be so highly important to abide by these recommendations. The use of single sensors will make you of course more flexible - also regarding your own micro climate.