From Figure 7 we can see that the number of infected people is distributed between 15 and 30, and when the rest time is 15 minutes, the number of infected people is the least.
As can be seen from Figure 7, the number of infected people is distributed in the range of 15 to 30, and when the rest time is 15 minutes, the number of infected people is the least<br>
It can be seen from fig. 7 that the number of infected people ranges from 15 to 30, and when the rest time is 15 minutes, the number of infected people is the least.