集装箱回风温度下降分析：货物预冷不足

From 02:21 on February 22nd, when the container was powered on, the return air temperature gradually decreased from 23.6 degrees Celsius until it reached 15 degrees Celsius at 00:00 on the 24th. This indicates that the goods were not pre-cooled or were not sufficiently pre-cooled before being loaded into the container.