The British pint is about 20% larger than the American pint since the two systems are not compatible. Almost all other countries have standardized on the metric system, so the size of what may be called a pint varies depending on local custom.
It is usually measured by the depth (in mm) of the water layer that can enter the soil in one hour. An infiltration rate of 15 mm/hour means that a water layer of 15 mm on the soil surface, will take one hour to infiltrate. In dry soil, water infiltrates rapidly.
Soil management. How the soil is managed has a large bearing on infiltration rates. As mentioned previously, cultivation can have a large impact on infiltration, as can the organic matter levels in the soil. Not only does organic matter help improve soil structure through promoting soil aggregation, but it also aids in 'trapping' water, and allowing it to infiltrate slowly.