cpk(line7_shift_a, 0.6666666666666673).
cpk(line8_shift_b, 1.6666666666666607).
status(line8_shift_b, capable_process).
status(line7_shift_a, needs_process_adjustment).
reason(line8_shift_b, "Cpk meets the production capability threshold").
reason(line7_shift_a, "Cpk is below the production capability threshold").