Benchtop bioreactors are used to produce antibodies for anti-cancer drugs. Engineers calibrate bioreactors in order to maximize production. The African Journal of Biotechnology (December 2011) published a study designed to achieve a high percentage of antibody production from a bioreactor. The variable of interest was the natural logarithm of the number of viable cells produced in a bioreactor run. Data were collected for a sample of four bioreactor runs every 6 hours for 20 consecutive time periods. These data (simulated from information provided in the article) are listed in the accompanying table. Engineers have specified the following for the bioreactor runs: target mean = 6.3, LSL = 5.9 and USL = 6.5. Run a complete capability analysis on the data. How would you categorize the performance of the process?

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Time Period Hour Run1 Run2 Run3 Run4 5.90 5.94 5.98 6.04 6.30 5.83 5.98 5.99 6.09 6.20 5.91 5.97 5.99 5.93 6.30 5.93 5.84 5.98 6.02 6.20 6. 12 18 24 3 4 6.04 6.19 6.37 6.56 6.36 6.36 30 36 42 48 54 60 6.08 6.13 6.27 6.46 6.36 6.37 6.27 6.26 6.46 6.16 6.45 6.23 6.13 6.27 6.36 6.16 6.37 6.15 6.29 6.27 6.26 6.16 6.27 6.17 9. 10 11 12 13 14 15 16 66 72 78 84 90 6.27 6.26 6.29 6.26 6.35 6.27 6.26 6.16 6.25 6.25 6.16 6.26 6.15 6.53 17 18 19 20 6.16 6.24 6.15 6.30 6.16 6.23 6.16 6.52 6.55 6.24 6.15 6.13 6.56 6.24 6.15 6.48 102 108 114