PNG IHDR c T pHYs nu> tIME W "tEXtCreation Time 11-Jul-2013 18:07:00T $tEXtSoftware MATLAB, The Mathworks, Inc.R IDATxњ(國wVb*jfvhA 0L1 ܝL1 ܝL1 ܝL1 ܝL1 ܝL1 ܝL1 ܝL1 ܝL1 ܝL1 ? ~[x