For example, here, this is very important, because that tells whether the air pollution comes from outside of Taiwan, or whether inside Taiwan. If we don’t have that number, it’s very difficult to tell whether it’s of a foreign nature or not.
For example, here, this is very important, because that tells whether the air pollution comes from outside of Taiwan, or whether inside Taiwan. If we don’t have that number, it’s very difficult to tell whether it’s of a foreign nature or not.