PNG IHDR t 9tEXtSoftware Matplotlib version3.3.4, https://matplotlib.org/T̺ pHYs a a?i IDATxwXWo# * 7➈g]}FEZ[g::VA\8Tq]bB\OrιyNNΑ > """"""""""pppppppppppppp#B"Gݡ$00~~~* HX1H$~ׯ_cpvv! QfM̙3 =zիWׇ<<