PNG IHDR 5W sBIT|d pHYs a a?i 9tEXtSoftware matplotlib version 2.1.1, http://matplotlib.org/ O IDATxw\?! !lQqkܫn[GAV[[GheX_ <IBBQ+/~Ͻ|{ι""0`ԃV`0ƛ 3``0T`0*a`00c`0J`0C%X`0f,0P 3^{-Wb4z