The present tense close in German is used to describe actions happening right now or events that occur regularly. It can also be used to express the near future. The present tense : How to talk about ...
[Article] Tense present Adjust Share Democracy, English, and the wars over usage ...
The shade WBGT is calculated for an environment shaded from direct (and strong reflected) solar radiation and where surfaces are not significantly hotter or colder than the indicated air temperature. ...