2020年07月2日: 01:00: 29.96mg/L;   03:00: 22.75mg/L;   05:00: 29.86mg/L;   07:00: 21.83mg/L;   09:00: 28.39mg/L;   11:00: 29.34mg/L;   13:00: 21.59mg/L;   15:00: 28.28mg/L;   17:00: 20.87mg/L;   19:00: 28.78mg/L;   21:00: 21.33mg/L;   23:00: 27.98mg/L.