2020年09月15日：01:00： 24.20mg/L; 03:00: 23.40mg/L; 05:00: 24.30mg/L; 07:00: 22.87mg/L; 09:00: 26.63mg/L; 11:00: 25.63mg/L; 13:00: 25.05mg/L; 15:00: 27.74mg/L; 17:00: 25.54mg/L; 19:00: 24.24mg/L; 21:00: 23.68mg/L; 23:00: 25.27mg/L.