set title 'Tree curve: theta=0.15pi, ratio=0.6, reputation=9'
set xtics -1, 0.5
set ytics -1, 0.5
set ztics 0, 0.5
set ticslevel 0
splot \
'tree0.dat' t '' w l 1, \
'tree1.dat' t '' w l 2, \
'tree2.dat' t '' w l 3, \
'tree3.dat' t '' w l 4, \
'tree4.dat' t '' w l 5, \
'tree5.dat' t '' w l 6, \
'tree6.dat' t '' w l 7, \
'tree7.dat' t '' w l 8, \
'tree8.dat' t '' w l 9