Table 2 Spearman correlation coefficient matrix among weather variables used to model reported cases of COVID-19 caused by the B.1.617.2 (delta) variant of SARS-CoV-2, Sydney, Australia from 16 June to 10 September, 2021
Variables | 9:00 am temperature | 9:00 am humidity | 3:00 pm temperature | 3:00 pm humidity | Temperature difference | Humidity difference |
|---|---|---|---|---|---|---|
9:00 am temperature | 1 | − 0.53* | 0.64* | − 0.33* | − 0.15 | − 0.10 |
9:00 am humidity | ‒ | 1 | − 0.31* | 0.63* | 0.11 | 0.24* |
3:00 pm temperature | ‒ | ‒ | 1 | − 0.57* | 0.59* | 0.42* |
3:00 pm humidity | ‒ | ‒ | ‒ | 1 | − 0.47* | − 0.41* |
Temperature difference | ‒ | ‒ | ‒ | ‒ | 1 | 0.69* |
Humidity difference | ‒ | ‒ | ‒ | ‒ | ‒ | 1 |