Table 2.
Descriptive statistics of COVID-19 infected cases, number of deaths and environmental (temperature, humidity, and dew) and air quality (PM10, CO, and SO2) parameters since the start of the outbreak in six cities of Saudi Arabia.
| Variable | N | Mean | Std Dev | Median | Minimum | Maximum |
|---|---|---|---|---|---|---|
| Infected | 1104 | 131.74366 | 208.97744 | 56.00000 | 0 | 2371 |
| Death | 1104 | 7.50589 | 11.63360 | 1.00000 | 0 | 41.00000 |
| EWMA Temperature | 1104 | 28.74289 | 6.12128 | 29.14000 | 14.00000 | 39.00000 |
| EWMA Humidity | 1104 | 36.73019 | 15.47045 | 36.25000 | 10.79000 | 79.36000 |
| Dew | 1104 | 10.70053 | 6.56459 | 10.00000 | −8.00000 | 28.00000 |
| PM10 | 1103 | 25.99469 | 22.81056 | 20.50000 | 1.00000 | 290.00000 |
| CO | 1099 | 8.44538 | 4.11055 | 7.00000 | 1.00000 | 26.00000 |
| SO2 | 1103 | 2.66053 | 1.86333 | 2.00000 | 1.00000 | 17.00000 |