2025年10月21日:   00:00: 28.89mg/L;   01:00: 31.84mg/L;   02:00: 27.08mg/L;   03:00: 26.84mg/L;   04:00: 31.85mg/L;   05:00: 27.79mg/L;   06:00: 27.67mg/L;   09:00: 31.45mg/L;   11:00: 27.23mg/L;   12:00: 27.46mg/L;   13:00: 28.24mg/L;   14:00: 27.65mg/L;   15:00: 27.63mg/L;   16:00: 31.21mg/L;   17:00: 27.23mg/L;   18:00: 27.12mg/L;   19:00: 30.27mg/L;   20:00: 30.28mg/L;   21:00: 29.57mg/L;   22:00: 30.12mg/L;   23:00: 26.07mg/L.