arg ?= 38.18090452261306 math /xrange -5:5 yrange -0.1:1.1 ylabel "Concentration" xlabel "Position" time = $(eval "sprintf '%.1f', $(arg)") draw-text -4.5,0.8 '$t = '$(time)'$' /justification=left draw-line -5,0 5,0 /color=Gray /style=Dashes plot "1/($(arg))**0.5 * exp(-x**2/$(arg))"