Factor
Levels
Clay size
1 (size 3)
2 (size 5)
3 (size 7)
PEG%
0 g
1 (0.1 g)
2 (0.2 g)
3 (0.3 g)
4 (0.4 g)
5 (0.5 g)
6 (0.6 g)