PNG IHDR c T pHYs nu> tIME!F+ "tEXtCreation Time 12-Jan-2011 12:20:33$R $tEXtSoftware MATLAB, The Mathworks, Inc.R IDATxr8P8eC Z-iَ,m [?USpمbϛL,_߽Z U] ^ r{sz/m/ И1 @VF{syk $ ivBZ'ZbʩYkwر?LL[$Q"i. .f S Zy/^kyx(~|Z1zQ[[a+^ LR V֫y;I6уt?~|4\-M .` S λ=