Study Figure 3a, which compares two earthquakes that affected the city of San Ventura.
| Date | Time of earthquake | Magnitude | Depth of focus (km) | Distance from city centre (km) | Short-term impacts |
|---|---|---|---|---|---|
| 12 October 2018 | 02:15 am | 6.8 | 12 | 35 | 8 deaths; most residents asleep in low-rise timber-framed suburban homes; commercial district empty. |
| 15 May 2019 | 14:30 pm | 6.2 | 4 | 8 | 245 deaths; busy working and school hours; heavy concrete multi-story offices and schools collapsed. |
Explain how the time of day the earthquake occurred affected the number of deaths.