Table 8.
Average and standard deviation of the average roughness () of the samples.
| Brickyard 1 | Brickyard 2 | Brickyard 3 | Brickyard 4 | Brickyard 5 | |
|---|---|---|---|---|---|
| Average | 2.1439 | 2.3314 | 1.3886 | 2.2869 | 2.3892 |
| Standard deviation | 0.6656 | 0.8339 | 0.8991 | 0.4195 | 0.5746 |
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