7.16 1 100 
 6.78 1 100
13.60 1 100
 8.93 1 100
 8.26 1 100
14.00 1 100
16.10 1 100
 9.66 1 100
 5.20 1  75
 5.20 1  75
 7.18 1  75
 6.37 1  75
13.20 1  75
 8.39 1  75
10.40 1  75
 7.18 1  75
11.11 1  50
 9.74 1  50
18.80 1  50
 9.74 1  50
10.50 1  50
14.60 1  50
11.10 1  50
11.80 1  50
 6.14 2 100
 3.86 2 100
10.40 2 100
 5.49 2 100
 6.14 2 100
10.00 2 100
11.60 2 100
 5.80 2 100
 4.47 2  75
 9.90 2  75
 5.75 2  75
11.80 2  75
 4.95 2  75
 6.49 2  75
 5.44 2  75
 9.90 2  75
 9.63 2  50
 6.38 2  50
13.40 2  50
14.50 2  50
14.50 2  50
10.20 2  50
17.70 2  50
12.30 2  50

Oxygen consumption (microlitres/mg dry body weight/min) (column 1)
in two species of limpet (column 2)
at 3 salinities (column 3). 
Data from Sokal and Rohlf 1995 Biometry p332

MTB>read 'srbx11_2.dat' c1-c3;
SUBC>nobs=48.