How to judge the weather from the barometer of Casio PROTREK mountaineering table?

Casio PROTREK has triple sensing function, which can measure azimuth, air pressure/temperature and altitude, especially the third generation triple sensor. Compared with the previous generation, the volume is reduced by 95% and the energy consumption is reduced by 90%, so the whole dial is relatively light and small, which is very suitable for both men and women. Judging the weather from the barometric chart, the LCD screen can display the change of barometric pressure with one key operation. If the pressure curve shows a downward trend, it means that the low pressure is approaching and there may be heavy rain; If it is on the rise, it means that the weather is improving. According to the weather forecast, it is helpful for climbers to plan their downhill route in advance.