2025年10月20日:   00:00: 31.88mg/L;   01:00: 26.88mg/L;   02:00: 26.28mg/L;   03:00: 31.41mg/L;   04:00: 30.09mg/L;   05:00: 25.92mg/L;   06:00: 31.88mg/L;   07:00: 28.53mg/L;   08:00: 27.22mg/L;   09:00: 32.11mg/L;   11:00: 26.86mg/L;   12:00: 27.45mg/L;   13:00: 31.86mg/L;   14:00: 26.82mg/L;   15:00: 26.73mg/L;   16:00: 31.36mg/L;   17:00: 29.81mg/L;   18:00: 26.60mg/L;   19:00: 31.35mg/L;   20:00: 29.81mg/L;   21:00: 26.37mg/L;   22:00: 30.40mg/L;   23:00: 29.21mg/L.