What do water droplets mean in meter-band weather?

In the weather forecast, the weather symbol of water drops represents the meaning: 1, and light rain: only one drop of water falls in the cloud.

2. moderate rain: there are two drops of water falling from the clouds.

3. Heavy rain: Three drops of water fell from the clouds.

4. Heavy rain: Four drops of water fell from the clouds.

5. Shower: an inverted triangle with a light rain spot on it.