https://vahaduo.github.io/vahaduo/
Target ja source osioihin voi näytteitä kopioida suoraan Global25 Datasheet tiedostosta.
https://bga101.blogspot.com/2019/07/getting-most-out-of-global25.html
https://1.bp.blogspot.com/-eJMvDejk-cw/XWIvK3exzjI/AAAAAAAABAo/RC27QKd-SDYQrjyNj10wBWi6lfavTaOAwCLcBGAs/s640/rauta-target_crop.jpg
![Kuva](https://1.bp.blogspot.com/-0KfU7MuIIFo/XWIvK-BWZgI/AAAAAAAABAs/QQTg8xNLFZg5BegQtqZsWmJhDcYtzjfggCLcBGAs/s1600/Distance-crop.jpg)