Southern beds are not shaded by any other crops. They receive more light than the rest of the tunnel.
To profit from this, you should increase density by 30%. Thus, increasing yields. This means, instead of planting tomatoes 18 inches apart, plant them 14 inches apart.
Don’t forget to adjust irrigation and fertilization. Put 5 drip tapes instead of 4, and multiply your fertilizer by 1.3.
Using this calculator, take the “Leader per square foot - South Bed” number in the calculation.