2019年12月9日： 01:00: 21.88mg/L;   03:00: 27.53mg/L;   05:00: 27.57mg/L;   07:00: 27.18mg/L; 09:00: 22.46mg/L;   11:00: 24.02mg/L;   13:00: 25.79mg/L;   15:00:   29.82mg/L;   17:00:   23.33mg/L;   19:00: 23.37mg/L;   21:00: 22.58mg/L;   23:00: 29.46mg/L.