Using R, I would like to find out which Samples (S1, S2, S3, S4, S5) fulfill
the following criteria:contain minimally one value (x, y or z) bigger than
4. Any ideas? Thanks, Alex.

> data
  Sample       x        y      z
1        S1   -0.3    5.3    2.5
2        S2    0.4    0.2   -1.2
3        S3    1.2   -0.6    3.2
4        S4    4.3    0.7    5.7
5        S5    2.4    4.3    2.3

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