Usually people regard the pressure generated by a mercury column with a height of _ _ _ _ cm as 1 standard atmospheric pressure, and the value of atmospheric pressure is closely related to the weather

Usually people regard the pressure generated by a mercury column with a height of _ _ _ _ cm as 1 standard atmospheric pressure, and the value of atmospheric pressure is closely related to the weather. The atmospheric pressure is not fixed, usually the pressure generated by a mercury column with a height of 76cm is 1 standard atmospheric pressure;

Atmospheric pressure is not only related to altitude, but also closely related to weather. Generally, the air pressure is higher in sunny days than in cloudy days, and higher in winter than in summer.

So the answer is: 76, high, high.