pH
Location 2017 2018 2019 2020 2021 2022 2023 2024
1a 8
1b 8
1c 8
1d 7.5
2a 6.5
2b 6.5
2c 7
2d 7
3a 8
3b 7.5
3c 7.5
3d 7
4a 7.5
4b 8
4c 7.5
4d 7.5