"air pressure (adjusted to sea level) is reported in the station model as a coded number to the nearest tenth of a millibar (mb). to decipher the plotted pressure value, first place a decimal point between the second and third numbers from the left. then add either a "9" or "10" to the left so that the resulting number falls within the range of air pressures that could occur at sea level (almost always between 950 mb and 1049 mb). for example, a plotted value of 126 represents 1012.6 mb and 863 denotes 986.3 mb. the air pressure reported at binghamton was mb."

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Answer;

hot magma rises and pushes up toward the lithosphere, and as it cools it cycles back down toward the core to be heated again.

explanation; convection currents are the circular pathways taken by a fluid that enhances heat transfer by the process known as convection which occurs in fluids.convection currents transfer heat from one place to another by mass motion of a fluid. earth mantle is in a semi-liquid state and behaves like any other fluid, rising up from the bottom of the mantle after becoming hotter and less dense from heat of the earth's core, as the rock loses heat into the earth's crust it becomes cooler and more dense, then sinking back down to the core, then repeating the cycle.