You seem to have to separate columns in Y-axis, like this
jthi_0-1689183300753.png
In cases like this you can modify Variables on the left side under different graphs, so remove other column from the smoother's variables
jthi_1-1689183336835.png
(do note that that the colors might get a bit weird as they are order based)
jthi_2-1689183400243.png
-Jarmo