The truth is that we are very poorly served by the current observational network, and can not give precise estimates of what the THC «is», particularly not on annual time scales. (realclimate.org)
a. Independent: Send payment upon project's completion b. Seek approval: Final authorization on brochure design c. Frequency: Monthly d. Percentage of Annual Time: 5 percent (realtormag.realtor.org)
In the mid 19th century the largest components of the uncertainty at annual time scales are the measurement and sampling uncertainty and the coverage uncertainty because there were few observations made by a small global fleet. (judithcurry.com)