Cloud cover Cloud cover Cloud cover (also known as cloudiness, cloudage, or cloud amount) refers to the fraction of the sky obscured by clouds when observed from a particular location. Okta is the usual unit of measurement of the cloud cover. The cloud cover is correlated to the sunshine duration as the least cloudy locales are the sunniest ones while the cloudiest areas are the least sunny places. The global cloud cover averages around 0.68 when analyzing clouds with optical depth larger than 0.1. This value is lower (0.56) when considering clouds with an optical depth larger than 2, and higher when
Yoke (unit of measurement) England. In these "yokes" along the banks of the river Medway crops such as corn would have been cultivated. A "joch" is a traditional unit of area in German speaking countries, especially in Austria. One "joch" is the area of a square 40 "klafters" (about 83 yards) on a side. This comes to 0.5755 hectares or about 1.422 acres. The plural is "Joche". "Joch" is also the word for a yoke in German, so this unit represents an area that could be ploughed in a day by a yoke of oxen. In what is now the Czech Republic this unit