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 (with a single operator), a unit then needs to be processed by either C1 or C2. The processing time of the individual operators is given as follows.

A1, A2, and A3: 15 minutes

B: 14 minutes

C1 and C2: 2 minutes.

The process initiates the production of a new unit every 15 minutes. What is labour productivity (in units/hour) of this process?

Note: 1. Round your final answer to 2 decimal places if it is not a whole number.

2. Operators are paid even if they are idle.