Surface weather analysis United States, temperature and dewpoint are plotted in degrees Celsius. The wind barb points in the direction from which the wind is coming. Each full flag on the wind barb represents of wind, each half flag represents . When winds reach , a filled in triangle is used for each of wind. In the United States, rainfall plotted in the corner of the station model are in inches. The international standard rainfall measurement unit is the millimeter. Once a map has a field of station models plotted, the analyzing isobars (lines of equal pressure), isallobars (lines of equal pressure change),
Pressure point Pressure point A pressure point (Chinese: ; Japanese: "" "vital point, tender spot"; Sinhala: "Nila/Marma Sthana" (in Angampora); Telugu: "Marma Sthanam"; Malayalam: "marmam"; Tamil: "varmam") derives from the meridian points in Traditional Chinese Medicine and Indian Ayurveda and Siddha medicine, and the field of martial arts, and refers to an area on the human body that may produce significant pain or other effects when manipulated in a specific manner. The concept of pressure points spread through the Tamil martial art called Varma kalai, which is a martial art that concentrates on the body's pressure points. The concept of pressure points