Cloud cover such as the Amazon Rainforest and some others are almost always clear such as the Sahara Desert. 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
Thai units of measurement "wa", "ngan" and "rai" are still used in measurements of land area. The "baht" is still used as a unit of measurement in gold trading. However, one "baht" of 96.5% gold bullion is defined as 15.16 grams rather than the generic standard of 15 grams. The "baht" has also become the name of the currency of Thailand, which was originally fixed to the corresponding mass of silver. Thai units of measurement Thailand adopted the metric system on 17 December 1923. However, old Thai units are still in common use, especially for measurements of land. Before metrication, the traditional system of