What was the ratio of tall to short plants in the F generation of Mendel's experiments?

In Mendel's experiments with pea plants, the ratio of tall to short plants in the F1 generation was 100% tall, as tall (dominant) traits masked the short (recessive) traits. However, in the F2 generation, after self-pollinating the F1 plants, the ratio of tall to short plants was approximately 3:1, with three tall plants for every one short plant.