[Stata Program]

input bacteria time
355 01
211 02
197 03
166 04
142 05
106 06
104 07
060 08
056 09
038 10
036 11
032 12
021 13
019 14
015 15
end
  
plot bacteria time
generate lnbac = log(bacteria)
plot lnbac time

  
[Stata Output]
  
plot bacteria time
  
     355 +  
         | *
         |  
         |  
         |  
         |  
    b    |  
    a    |  
    c    |  
    t    |  
    e    |     *    *
    r    |  
    i    |              *
    a    |                   *
         |  
         |                       *
         |                            *
         |  
         |                                 *   *
         |                                          *   *
      15 +                                                   *   *    *    *
          +----------------------------------------------------------------+
                1                      time                            15
                
generate lnbac=log(bacteria)

plot lnbac time
  
 5.87212 +  
         | *
         |  
         |  
         |  
         |     *    *
         |              *
         |                   *
    l    |  
    n    |                       *    *
    b    |  
    a    |  
    c    |                                 *
         |                                     *
         |  
         |                                          *   *
         |                                                   *
         |  
         |                                                       *
         |                                                            *
 2.70805 +                                                                 *
          +----------------------------------------------------------------+
                1                      time                            15