2026年5月20日:   00:00: 26.65mg/L;   01:00: 26.51mg/L;   02:00: 26.05mg/L;   03:00: 25.92mg/L;   04:00: 25.44mg/L;   05:00: 26.28mg/L;   06:00: 26.12mg/L;   07:00: 22.89mg/L;   08:00: 23.20mg/L;   09:00: 23.21mg/L;   11:00: 26.02mg/L;   12:00: 21.65mg/L;   13:00: 24.57mg/L;   14:00: 25.51mg/L;   15:00: 24.68mg/L;   16:00: 24.92mg/L;   17:00: 24.52mg/L;   18:00: 24.68mg/L;   19:00: 25.01mg/L;   20:00: 24.48mg/L;   21:00: 24.34mg/L;   22:00: 24.68mg/L;   23:00: 24.47mg/L.