A company manufactures golf balls, which have a diameter of 42.67mm. The rules regulating tour balls are extremely rigid. Tour balls can only vary by 0.09mm. Each day, a worker collects nine samples consisting of eight balls and measures the diameters. The sample mean is found to be 42.66mm with a standard deviation of 0.05mm. Compute the process capability for this process. (round your answer to the nearest tenth)