| P1 | P2 | P3 | P4 | Overall |
No. of tickets | 24 | 35 | 180 | 140 | 379 |
# of defects | 8 | 5 | 11 | 13 | 37 |
Yield (%) | 66.7 | 85.7 | 93.9 | 90.7 | 90.2 |
DPMO | 333,333.33 | 142,857.14 | 61,111.11 | 92,857.14 | 97,625.33 |
Sigma Level | 1.93 | 2.57 | 3.05 | 2.82 | 2.8 |