The concept of temperature change?

There is a maximum and a minimum temperature in a day and night, which are called daily maximum temperature and daily minimum temperature respectively, and the difference between them is called daily temperature difference. The highest temperature generally appears around 2 pm, and the lowest temperature generally appears around sunrise. Of course, if the weather changes dramatically, the daily change of temperature may not necessarily follow this law. When forecasting the temperature in a certain place on a certain day in TV weather forecast, the daily minimum temperature and the daily maximum temperature are given.