allergics nonallergics
1651.0     48.1
1112.0     48.0
 102.4     45.5
 100.0     41.7
  67.6     35.4
  65.9     34.3
  64.7     32.4
  39.6     29.1
  31.0     27.3
   NA      18.9
   NA       6.6
   NA       5.2
   NA       4.7