Hypoventilation syndrome. Congenital central hypoventilation syndrome (CCHS) is a rare disorder of respiratory control with autonomic nervous system dysregulation (ANSD).
Frost forms in much the same way as dew forms. Frost usually forms when a surface cools through loss of infrared radiation to a temperature which is colder than the dewpoint of the air next to the surface, AND the temperature of that surface is below freezing (32 deg F, or 0 deg.C).The source of this moisture is water vapor contained in the air.rost forms in much the same way as dew forms. Frost usually forms when a surface cools through loss of infrared radiation to a temperature which is colder than the dewpoint of the air next to the surface, AND the temperature of that surface is below freezing (32 deg F, or 0 deg.
Typically, the frost line is the depth to which ice or frost penetrates the ground. The frost depth is determined by a variety of factors including the temperature, the length of time the air temperature remains below freezing, and the level of moisture in the ground.or instance, 1  In the United States, there is no frost line set for Florida, but it can be as deep as 60 inches (152.4 cm) in some northern sections of the lower 48 states. 2  In Minnesota, the maximum is 60 inches in the northern counties, but in southern counties; the depth of the frost only reaches 40 inches (101.6 cm).