To explain the markings on the map
The color scale is based on the droplet tests for pH:
- red: appr. 4 to 5,5
- yellow: appr. 6,0
- three green: 6,5 7,0 and 7,5
- blue appr. 8 to 9,5.
Gray points stand for measurements without pH.
For measurements where the exact location is known, the GPS data was entered in brackets.
If the exact location is not known, the brackets are present but empty.