I rode trains and buses to do necessary task yesterday.
Then I noticed whether we feel bigger reliefes with opening windows without hesitation, don't you think?
If we were infected by New coronavirus due to everyone's too much hesitation there,
it is a too terrible situation for us.
So,
we may be recommended to go out with public transports on not rainy days
rather than on rainy days,
because we do not want to open windows on such rainy days.
Anyway, we must not have any timings with gathering people,
that is, such timing must be "0".
If we can avoid statuses of "3 Mitsu (In Japanese term):
3 dense virus situations in the surrounding air of you (closed room, crowd, short humans' distance)", in a result,
it seems that these are better statuses to aim in the short, I think.
(This is Japanese status.
And in Japan, we do not recommend to go out from our house now.)