set ticslevel 0
set xr [-25:8]

set palette positive nops_allcF maxcolors 0 gamma 1.5 color model RGB 
set palette model HSV
set palette defined ( 0 0 1 1, 1 1 1 1 )

#set palette defined ( 20 "#101010", 30 "#ff0000", 40 "#00ff00", 50 "#e0e0e0" ) 
#set title 'set palette defined ( 20 "#101010", 30 "#ff0000", 40 "#00ff00", 50 "#e0e0e0" )'

#set title 'set palette file "-" (file with 4 columns)'
#set palette file "-"
#10 0 0 0
#20 0 0 1
#40 0 1 0
#60 1 0 0
#70 1 1 1
#e

#set palette rgbformulae 7,5,15
#set palette model RGB rgbformulae 7,5,15
#set title "set palette model RGB rgbformulae 7,5,15"

#set palette model RGB
#set palette functions gray, gray, gray
#set title "set palette functions gray, gray, gray"

set pm3d
splot 'Wf.B05_gh_nq52_n12m_n2_E2p4481771' u 1:2:($3**2+$4**2) w pm3d
