Quote:
Originally Posted by blimp
ok....
first, the document connected to the link i sent mentions nothing about population densities, so i am not sure what list you are looking at. second, the list has apart from population for each listed city also three variables (perhaps this what you refer to as "numbers") that hopefully* gives a relatively good picture of the air quality of the city in question.
*i say hopefully since i am not an expert on air pollution or air quality, but will have to take the authors' word that these are indeed good indicator for air pollution.
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You are right...population, not population densities.
I ask because without knowing what a "good number" or a "bad number" is, it is hard for me to know what the numbers mean. So Tokyo has less particulate matter than Athens, but a higher population. But is has 7 times the population of Bogota but more particles per 1000.
I am not being lazy when I say it is hard for me to know what these numbers MEAN, as I am not sure what population adds to the equation, besides number of people in "danger". And what is population without population density or the city's actual size?