PNG IHDR 8 ~ sBIT|d pHYs .# .#x?v 9tEXtSoftware matplotlib version 3.0.2, http://matplotlib.org/8; IDATxyxչ7'¤IP V)UAhEDJZϩ~kG== NED8Z)TE0$T;Mg?;k=yκ]) 5t 9 ?