2026年5月21日:   00:00: 24.93mg/L;   01:00: 25.36mg/L;   02:00: 24.61mg/L;   03:00: 24.64mg/L;   04:00: 24.33mg/L;   05:00: 24.31mg/L;   06:00: 24.54mg/L;   07:00: 24.82mg/L;   08:00: 25.07mg/L;   09:00: 24.47mg/L;   11:00: 24.78mg/L;   12:00: 25.10mg/L;   13:00: 25.03mg/L;   14:00: 25.25mg/L;   15:00: 25.37mg/L;   16:00: 28.15mg/L;   17:00: 27.52mg/L;   18:00: 27.59mg/L;   19:00: 27.19mg/L;   20:00: 27.36mg/L;   21:00: 26.65mg/L;   22:00: 26.83mg/L;   23:00: 26.37mg/L.