Why do CCTV weather forecast broadcast temperature in two ways: (A: 18 degrees to 15 degrees) and (B: 15 degrees to 10 degrees)?

The highest temperature in a day appears around 14: 00 after noon.

The highest and lowest temperatures in a day appear at dawn.

If the weather forecast is made that night, the temperature information generally refers to the period from 0:00 the next day to 23: 59 the next three days.

If the weather forecast is made at noon that day, the temperature information generally refers to the period from about 12: 00 on the same day to about 12:00 on the next day.

So: Why are there two ways to broadcast the temperature in CCTV weather forecast: (A: 18 degrees to 15 degrees) and (B: 15 degrees to 10 degrees)?

Besides, who is copying me! ! !

To: Baidu, protect the intellectual property rights of netizens! ! !

Tell you a discovery:

If you modify the answer, the posting time will be subject to your modification time, and the first posting time will be invalid. I think "Xuan Bing _qy" knew the secret before she dared to copy me. Attention! ! !