*  aerosol experiment;  * chapter 18;
OPTIONS LINESIZE=75;
DATA AERO;
 INPUT MANUF FILTER AERO Y;
 LINES;
 1  1     1  0.750
 1  1     1  0.770 
 1  1     1  0.840      
 1  1     2  1.120 
 1  1     2  1.100 
 1  1     2  1.120 
 1  2     1  0.082
 1  2     1  0.076
 1  2     1  0.077          
 1  2     2  0.150
 1  2     2  0.120
 1  2     2  0.120
 2  1     1  0.600
 2  1     1  0.680
 2  1     1  0.870           
 2  1     2  0.910
 2  1     2  0.830
 2  1     2  0.950
 2  2     1  1.000
 2  2     1  1.800
 2  2     1  2.700     
 2  2     2  2.170
 2  2     2  1.520
 2  2     2  1.580
;