| Parameter | Time (in seconds) | ||
| Welding | Griding | Unproductive | |
| Maximum | 2174 | 1320 | 1509 |
| Minimum | 1110 | 320 | 64 |
| Mean | 1516.72 | 797.79 | 304.69 |
| Standard deviation | 254.92 | 247.98 | 281.88 |
| Coefficient of variation (standard deviation/mean) | 0.17 | 0.31 | 0.92 |