->  codebook


town ------------------------------------------ Town/Gardanne Coal Basin France
                  type:  string (str8)

         unique values:  5                    coded missing:  0 / 10

            tabulation:  Freq.  Value
                             2  "Biver"
                             2  "Bouc"
                             2  "Gardanne"
                             2  "Greasque"
                             2  "Meyrueil"


so2 ------------------------------------------- Mean 2-Week SO2 Levels (ug/m^3)
                  type:  numeric (int)

                 range:  [33,147]                     units:  1
         unique values:  10                   coded missing:  0 / 10

                  mean:      89.3
              std. dev:   37.7007

           percentiles:        10%       25%       50%       75%       90%
                             45.5        59      80.5       120     139.5


pulm ------------------------------------------ Mean % Children w/Pulmonary Sym
                  type:  numeric (byte)

                 range:  [14,33]                      units:  1
         unique values:  9                    coded missing:  0 / 10

            tabulation:  Freq.  Value
                             2  14
                             1  17
                             1  19
                             1  22
                             1  24
                             1  25
                             1  27
                             1  31
                             1  33


ent -------------------------------------------- Mean % Children w/ENT Symptoms
                  type:  numeric (byte)

                 range:  [29,57]                      units:  1
         unique values:  8                    coded missing:  0 / 10

            tabulation:  Freq.  Value
                             2  29
                             1  31
                             1  37
                             2  41
                             1  45
                             1  46
                             1  52
                             1  57

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