PNG IHDR sBITLˢ 0PLTEUUUUUUUUUUUU IN .tEXtSoftware gnuplot Unix version 3.7 patchlevel 1C cIDATxKoڀG`c1d:& V1z@76AD6I7A 9m j:s#EJDjdJǶxшϕ MQ{|\ p