A quality engineer records pipe diameters in separate columns for each week. The engineer wants to combine all measurements into a single column of diameters.
Week 1, Week 2, and Week 3 contain the unstacked data. The stacked data are in Diameter. The corresponding subscripts are in ID.
C1 | C2 | C3 | ... | C6 | C7-T |
---|---|---|---|---|---|
Week 1 | Week 2 | Week 3 | ... | Diameter | ID |
5.19 | 5.57 | 8.73 | ... | 5.19 | Week 1 |
5.53 | 5.11 | 5.01 | ... | 5.53 | Week 1 |
4.78 | 5.76 | 7.59 | ... | 4.78 | Week 1 |
5.44 | 5.65 | 4.73 | ... | 5.44 | Week 1 |
4.47 | 4.99 | 4.93 | ... | 4.47 | Week 1 |
4.78 | 5.25 | 5.19 | ... | 4.78 | Week 1 |
4.25 | 7.00 | 6.77 | ... | 4.25 | Week 1 |
5.70 | 5.20 | 5.66 | ... | 5.70 | Week 1 |
4.40 | 5.30 | 6.48 | ... | 4.40 | Week 1 |
5.64 | 4.91 | 5.20 | ... | 5.64 | Week 1 |
... | 5.57 | Week 2 | |||
... | 5.11 | Week 2 | |||
... | 5.76 | Week 2 | |||
... | 5.65 | Week 2 | |||
... | ... | ... |