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