PNG IHDR ש pHYs + PLTE T \ U T T TGpL j T b U U ; : K A ^ L ` ; O : M M Q = Q T T 8 @ C U 8 ; U "f T O T ; T !f P [ !d T = U a !d =U jNݷ 6tRNS \\u x\x\uu\x x !x x