->  codebook


test -------------------------------------------------------------- case number
                  type:  numeric (byte)

                 range:  [1,19]                       units:  1
         unique values:  19                   coded missing:  0 / 19

                  mean:        10
              std. dev:   5.62731

           percentiles:        10%       25%       50%       75%       90%
                                2         5        10        15        18


month ------------------------------------------------------------------- Month
                  type:  numeric (byte)
                 label:  mlbl

                 range:  [2,12]                       units:  1
         unique values:  11                   coded missing:  0 / 19

              examples:  3     March
                         6     June
                         9     Septembe
                         11    November


day ----------------------------------------------------------------------- Day
                  type:  numeric (byte)

                 range:  [2,30]                       units:  1
         unique values:  15                   coded missing:  0 / 19

                  mean:   16.9474
              std. dev:    9.3421

           percentiles:        10%       25%       50%       75%       90%
                                2         9        20        25        29


year --------------------------------------------------------------------- Year
                  type:  numeric (int)

                 range:  [1965,1972]                  units:  1
         unique values:  7                    coded missing:  0 / 19

            tabulation:  Freq.  Value
                             1  1965
                             3  1966
                             1  1967
                             1  1968
                             3  1969
                             4  1971
                             6  1972


isc ------------------------------------------- Internat'l Seismic Ctr magnitud
                  type:  numeric (float)

                 range:  [4.8,6.1]                    units:  .1
         unique values:  14                   coded missing:  0 / 19

                  mean:   5.54211
              std. dev:   .418085

           percentiles:        10%       25%       50%       75%       90%
                              4.9       5.2       5.5         6       6.1


sykes ----------------------------------------------- Sykes and Ruggi magnitude
                  type:  numeric (float)

                 range:  [4.8,6.181]                  units:  .001
         unique values:  19                   coded missing:  0 / 19

                  mean:   5.55232
              std. dev:   .414414

           percentiles:        10%       25%       50%       75%       90%
                             4.88       5.2      5.51     5.954       6.1


pub ----------------------------------------------- Published Yield in Kilotons
                  type:  numeric (int)

                 range:  [2,165]                      units:  1
         unique values:  16                   coded missing:  0 / 19

                  mean:   51.6316
              std. dev:   54.2988

           percentiles:        10%       25%       50%       75%       90%
                                4        10        23       100       140


region -------------------------------------------------- Region of Khazakhstan
                  type:  numeric (byte)
                 label:  reg

                 range:  [1,3]                        units:  1
         unique values:  3                    coded missing:  0 / 19

            tabulation:  Freq.   Numeric  Label
                             9         1  Degelen
                             6         2  Balapan
                             4         3  Murzhik


rock ---------------------------------------------------------------- Rock Type
                  type:  numeric (byte)
                 label:  rklbl

                 range:  [1,6]                        units:  1
         unique values:  6                    coded missing:  0 / 19

            tabulation:  Freq.   Numeric  Label
                             3         1  Granite
                             6         2  Q.Porphy
                             6         3  Siltston
                             1         4  Conglome
                             2         5  Sandston
                             1         6  TuffSand


emplace ------------------------------------------------ Emplacement Conditions
                  type:  numeric (byte)
                 label:  elbl

                 range:  [1,2]                        units:  1
         unique values:  2                    coded missing:  0 / 19

            tabulation:  Freq.   Numeric  Label
                             9         1  Adit
                            10         2  Hole

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