Station A has 3 parallel operators, A1, A2, and A3. Station C has 2 parallel operators, C1 and C2. Each unit only needs to be processed by one of the operators A1, A2 and A3. After being processed at Station B, a unit then needs to be processed by either C1 or C2. The process time of the individual operators are given as follows.

Each of A1, A2, and A3: 13 minutes

B: 12 minutes

Either of C1 and C2: 3 minutes.

What is the capacity (in units/hour) of the whole process? Round your final answer to 2 decimal places if it is not a whole number.