Time period not conducive to on-site observation

Noon, thunderstorm weather, foggy weather and cold or hot summer weather are not conducive to field observation.

Noon is the highest temperature in a day, which will lead to overheating or error of observation equipment and bring discomfort to observers. Thunderstorm weather has a high risk, which will lead to the damage of observation equipment or the risk of lightning strike for observers. Poor sight in foggy days will affect the observation accuracy of observers, especially in the case of long-distance observation. The large temperature difference in cold or hot summer weather will have a negative impact on the performance of observation equipment, and will also bring physical discomfort to observers and affect work efficiency. It is not suitable for field observation in these time periods, and it is necessary to choose suitable weather and time periods for observation to ensure the accuracy of data and the safety of observers.