plot1.gnuplot

set term pdf
set output "plot1.pdf"

plot "data1" using 1:2 with lines, "data1" using 1:3 with lines, "data1" using 1:4 with lines, "data1" using 1:5 with lines, "data1" using 1:6 with lines, "data1" using 1:7 with lines, "data1" using 1:8 with lines, "data1" using 1:9 with lines, "data1" using 1:10 with lines, "data1" using 1:11 with lines,  "data1" using 1:12 with lines