ELEMENT = Hf

all samples with negative results 4 samples

all samples with positive results 28 samples

samples with element contents between:

0,1352 - 1,39618 13 samples

1,39618 - 2,65716 5 samples

2,65716 - 3,91814 4 samples

3,91814 - 5,17912 5 samples

5,17912 - 6,4401 1 samples