PNG IHDR c T pHYs nu> tIME&b&{ "tEXtCreation Time 05-Apr-2013 12:01:38tQ $tEXtSoftware MATLAB, The Mathworks, Inc.R IDATxѶ8 PÙvlET`^= !*)c? ? d2 W'S pu2 W'S pu2 W'S pu2 W'S pu2 W'S pu2 W'S pu2 W'S pu2 W'S pu2 W'S pu2 W'S pu. w[x