I have a question about Python 3 data frame types.

For data frames with data values ranging from 5000 to 15000, I would like to extract the maximum and minimum values from them, but somehow df.max() will extract the maximum values below 10000 (e.g., 9999.9).For df.min(), more than 10000 values are also extracted.I would appreciate it if you could tell me the cause and the solution.