The graph belonging to K09 measurement point in Fig. 7 is in a much worse state than the graphs belonging to K14measurement point. Measurements are almost entirely (with 93.66% probability) outside the control limits. In contrast to the above, these measurements are below the LSL value. Sample average value (404.202mm) is well below the LSL = 406.3 mm. The standard deviation is 1.53. Since the average value is low than AKS, the CPL and CPK values are negative.
Graphical results of K09 lower measurement points are represented in Fig. 8.