I_mid1 = -2.4,-2.28,-2.16,-2.04,-1.92,-1.8,-1.92,-2.04,-2.16,-2.28,-2.4,-2.52,-2.64,-2.76,-2.88,-3,-2.88,-2.76,-2.64,-2.52,-2.4, Length = 21
I_mid2 = -1.8,-1.68,-1.56,-1.44,-1.32,-1.2,-1.32,-1.44,-1.56,-1.68,-1.8,-1.92,-2.04,-2.16,-2.28,-2.4,-2.28,-2.16,-2.04,-1.92,-1.8, Length = 21
I_mid3 = -1.2,-1.08,-0.96,-0.84,-0.72,-0.6,-0.72,-0.84,-0.96,-1.08,-1.2,-1.32,-1.44,-1.56,-1.68,-1.8,-1.68,-1.56,-1.44,-1.32,-1.2, Length = 21
I_mid4 = -0.6,-0.48,-0.36,-0.24,-0.12,-1.1102e-16,-0.12,-0.24,-0.36,-0.48,-0.6,-0.72,-0.84,-0.96,-1.08,-1.2,-1.08,-0.96,-0.84,-0.72,-0.6, Length = 21
I_mid5 = 0,0.12,0.24,0.36,0.48,0.6,0.48,0.36,0.24,0.12,0,-0.12,-0.24,-0.36,-0.48,-0.6,-0.48,-0.36,-0.24,-0.12,0, Length = 21
I_mid6 = 0.6,0.72,0.84,0.96,1.08,1.2,1.08,0.96,0.84,0.72,0.6,0.48,0.36,0.24,0.12,1.1102e-16,0.12,0.24,0.36,0.48,0.6, Length = 21
I_mid7 = 1.2,1.32,1.44,1.56,1.68,1.8,1.68,1.56,1.44,1.32,1.2,1.08,0.96,0.84,0.72,0.6,0.72,0.84,0.96,1.08,1.2, Length = 21
I_mid8 = 1.8,1.92,2.04,2.16,2.28,2.4,2.28,2.16,2.04,1.92,1.8,1.68,1.56,1.44,1.32,1.2,1.32,1.44,1.56,1.68,1.8, Length = 21
I_mid9 = 2.4,2.52,2.64,2.76,2.88,3,2.88,2.76,2.64,2.52,2.4,2.28,2.16,2.04,1.92,1.8,1.92,2.04,2.16,2.28,2.4, Length = 21