Example data for http://stackoverflow.com/questions/8056982/generate-multiple-serial-graphs-scatterplots-from-data-in-two-dataframes

Pf.txt

Pf1 Pf2 Pf3 Pf4
0.4 0.3 0.1 0.6
0.1 0.7 0.7 1
0.4 0.9 0.5 0.7
0.3 0.4 0.4 0.7
1 0.8 0.4 0.2
 0.4 0 0.3
 0.4 0.8 0.5
 0.1 0.2 
 0.2 0.2 
 0.8 0.4 

Tg.txt

Tg1 Tg2 Tg3 Tg4
0.1 0 0.3 0.3
0.1 0.1 0.9 0.5
0.4 0.7 0.2 0
0.9 0.5 0.5 0.2
0.9 0.2 0.3 0.4
0.2 0 0.7 0.2
 0.3 0.6 0.9
 0.5 0.4 1
 0.7  0.9
 0.7  0.9