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The race is known as preparation for the 24 Hours of Le Mans, [9] as the track's technical layout and extremely bumpy surface, combined with south-central Florida's perennial hot weather, is a major test of a car's reliability. Teams planning to compete at Le Mans regard Sebring as an ideal preparation run for the prestigious French race.
The 12 Hours of Sebring is renowned as a race that is even harder on machinery and drivers than Le Mans, and is seen as an ideal preparation run for the famed French race. The track surface has 3.04 mi (4.89 km) of asphalt and 0.7 mi (1.1 km) of concrete.
Such maps have been in use since the mid-19th century and are used for research and weather forecasting purposes. Maps using isotherms show temperature gradients, [2] which can help locate weather fronts. Isotach maps, analyzing lines of equal wind speed, [3] on a constant pressure surface of 300 or 250 hPa show where the jet stream is located.
Other countries then began preparing surface analyses. In Australia, the first weather map showed up in print media in 1877. [10] Japan's Tokyo Meteorological Observatory, the forerunner of the Japan Meteorological Agency, began constructing surface weather maps in 1883. [11] The London Times published the first weather map on April 1, 1875. [12]
A surface weather analysis for the United States on October 21, 2006. By that time, Tropical Storm Paul was active (Paul later became a hurricane). Surface weather analysis is a special type of weather map that provides a view of weather elements over a geographical area at a specified time based on information from ground-based weather stations.
The first weather maps in the 19th century were drawn well after the fact to help devise a theory on storm systems. [3] After the advent of the telegraph, simultaneous surface weather observations became possible for the first time. Beginning in the late 1840s, the Smithsonian Institution became the first organization to draw real-time surface ...
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All days of the year, solstices included, have the same length of 12 hours. Solstice day arcs as viewed from 20° latitude. The Sun culminates at 46.56° altitude in winter and 93.44° altitude in summer. In this case an angle larger than 90° means that the culmination takes place at an altitude of 86.56° in the opposite cardinal direction.