What data does the rainfall data belong to?

Precipitation is a measure of precipitation in a region.

Precipitation refers to the depth at which liquid and solid (after melting) precipitation falls from the sky to the ground and accumulates on the horizontal plane without evaporation, infiltration and loss. In mm, it is expressed by the English letter P, and one decimal point is taken in meteorological observation. 1mm precipitation means that the precipitation of one mu of land (666.7m2) reaches the water depth1mm. Precipitation intensity: the precipitation per unit time is called precipitation intensity, usually in millimeters/hour or millimeters/minute. Also known as rain intensity.

Rainfall is an important disaster data with chaotic characteristics. Different departments have different standards for the classification of rainfall grades. The rainfall of meteorological department refers to the depth of water layer falling to the ground in a certain period of time, and the unit is millimeter. The rainfall per unit time is called rainfall intensity. Rainfall intensity is classified according to rainfall grade.